SALIENT FEATURES (120 MW LOWER KOPILI HYDROELECTRIC PROJECT) features, Detailed... · 6.1.10...

SALIENT FEATURES

(120 MW LOWER KOPILI HYDROELECTRIC PROJECT)

1 Head Works

1.1 Dam Complex (General)

1.1.1 Location River Kopili near Longku

1.1.2 Type of Dam Concrete Gravity Dam

1.1.3 Top of Dam El 229.00 m

1.1.4 Full reservoir level El 226.00 m

1.1.5 Maximum Water level El 226.00 m

1.1.6 Minimum draw down level El 202.00 m

1.1.7 No. of Spillway blocks 6 No’s

1.1.8 Grade of Concrete As Shown in the Employers

Drawings.

1.2 Orifice Spillway

1.2.1 Design flood (PMF) 11030 Cumec

1.2.2 Invert Level EL. 190.00

1.2.3 No of Gates 6 No’s

1.2.4 Gate Type Radial

1.2.5 Size 10.0 m (W) x 12.50 m (H)

1.2.6 Hoisting arrangement Hydraulic cylinder

1.2.7 No of Stop log gates One

1.2.8 Hoisting arrangement for Stoplog gate Gantry Crane

1.2.9 Energy dissipation Trajectory Bucket (Ski jump)

1.2.10 Plunge Pool Pre-Excavated Hole for all over

flow blocks

1.2.11 Maximum Discharge for Riparian flow 33.97Cumec

1.2.12 Riparian flow Through Auxiliary Power

House

27.434 Cumec (Including 10%

Over load = 24.94x 1.1)

1.2.13 Balance Discharge for Riparian flow 6.536 Cumec

1.2.14 Diameter of Steel Pipe for Riparian

flow

1.50m

1.2.15 Center Line of Pipe for Balance

Riparian Pipe

EL 198.00m

1.2.16 Location of Pipe for Balance Riparian

Pipe

Left Pier of Block no.-13

1.2.17 Pipe Shall be completed with Inlet,

and Outlet with Slide Valve and

Hooded Cone Discharge Valve (HM

Scope)

Yes

1.3 Overflow Spillway

1.3.1 Spillway Crest level EL. 223.00 m

1.3.2 Gate Type Vertical Slide gate

1.3.3 No of gates One

1.3.4 Gate size 4.00 m (W) x 3.00 m (H)

1.3.5 Hoisting arrangement Twin Stem Screw Hoist

ASSAM POWER GENERATION CORPORATION LIMITED

1.4 River Diversion Scheme

1.4.1 Scheme Single Stage Diversion

1.4.2 River Diversion Flood 720 Cumec (25 Years Return

Period Non-Monsson Flood)

1.4.3 Diversion Tunnel 10.5 dia- 356m long, Left Bank

(shotcrete lined)

1.4.4 Construction Sluices 2 Nos, 5.0m (W) x 5.0m (H)

1.4.5 Inlet level for Construction Sluices EL 171.00m

1.4.6 Location of Construction Sluice Gates Block No 13, 14

1.4.7 Design Discharge through each Sluice 250 Cumec

1.4.8 Plug behind Construction Sluice Yes

1.4.9 No of Gates in Diversion Tunnel Gate 2.0 nos ( 4.5m x 10.5m)

1.5 Main Power Intake

1.5.1 Location Right bank

1.5.2 Design discharge at Trash Rack 123.98 Cumec (10% overload)

1.5.3 Design discharge for main Plant 123.98 Cumec (10% overload)

1.5.4 No of trash rack bays 6 No’s

1.5.5 Trash rack sill level El. 195.00 m

1.5.6 Trash rack size 7.38m (W) x 7.50m (H)

1.5.7 Type Fixed

1.5.8 Trash rack inclination 18o

1.5.9 TRCM No

1.5.10 No. of gates 2 no. ( 1- Service & 1- Maint.)

1.5.11 Gate size 6.0 m (W) x 6.0 m (H)

1.5.12 Crest Elevation EL 189.50 m

1.5.13 Type of Intake Gate Vertical slide

1.5.14 Grade of Concrete for Reinforced

Concrete

M30

1.6 Auxiliary Intake

1.6.1 Location Dam Body (Block No-15)

1.6.2 Design discharge at Trash Rack 27.43 Cumec (10% overload)

1.6.3 Design discharge for Auxiliary Plant 27.43 Cumec (10% overload)

1.6.4 No of trash rack bays 2 No’s

1.6.5 Trash rack sill level El. 195.00 m

1.6.6 Trash rack size 3.60m (W) x 7.50m (H)

1.6.7 Type Fixed

1.6.8 Trash rack inclination Vertical

1.6.9 TRCM No

1.6.10 No. of gates 2 no. ( 1- Service & 1- Maint.)

1.6.11 Intake Gate size 3.3 m (W) x 3.3 m (H)

1.6.12 Crest Elevation EL 195.00 m

1.6.13 Type of Intake Gate Vertical slide

1.6.14 Grade of Concrete for Reinforced

Concrete

M30

2 Water Conductor System-Main plant

2.1 Feeder Tunnel/Duct

2.1.1 No. of Feeder Tunnels One


2.1.2 Feeder Tunnel 6.0m (W) x 6.0m ( H)

2.1.3 Concrete lined Yes (Square Section)

2.1.4 Crack width for RCC 0.2mm

2.2 Head Race tunnel

2.2.1 No. One

2.2.2 Design discharge (Rated) 112.71 Cumec

2.2.3 Shape & Size of HRT Circular, 7.0m

2.2.4 Length 3641.22 m

2.2.5 Minimum concrete lining thickness 0.35 m

2.2.6 Minimum concrete grade for lining M-30

2.3 Adit to HRT

2.3.1 No. One

2.3.2 Size & Shape 6.0 m, D-Shaped

2.3.3 Length of Adit 354.66m – Self draining

2.3.4 Inver Concrete Thickness 300mm minimum

2.3.5 Bulkhead gate – Hinge Type Yes

2.3.6 Size of Bulkhead gate 2.5m (W) x 2.5 m (H)

3 Surge Shaft

3.1 Type Elevated, Restricted Orifice Type

3.2 Diameter 25.00 m (Finished)

3.3 Minimum Down surge level EL 188.00m

3.4 Maximum Up-surge level EL 235.00m

3.5 Reinforced concrete lining Yes

3.6 Grade of Concrete M30

3.7 Dia of Orifice/Riser 3.8m/ 7.0m

3.8 Grade of concrete M30

4 Valve House

4.1 Type Surface

4.2 Size 14m (W) x 23m (L) x 27.50 m

(H)

4.3 Diameter of Valve 6.10m

4.4 Center Line of Valve EL 142.55 m

5 Pressure shaft / Surface Penstock

Embedded in Concrete

5.1 Pressure Shaft

5.1.1 No. One

5.1.2 Size & Shape 6.10 m, circular

5.1.3 Length 451.20 m

5.1.4 Steel lined Yes

5.1.5 Min Thickness of Backfill Concrete 700mm

5.1.6 Grade of Backfill Concrete M20

5.2 Surface Penstock Embedded in

Concrete (Main)

5.2.1 No.’s One

5.2.2 Diameter 6.1/5.2 m

5.2.3 Length 158.8m (Dia 6.1m) / 81.9m (Dia

5.2m)

5.2.4 Concrete encasement Yes


5.2.5 Grade of Concrete M25

5.2.6 Bifurcation (Symmetrical) Yes

5.3 Unit Penstock (after bifurcation)

5.3.1 No.’s Two

5.3.2 Diameter 3.7 m

5.3.3 Total length 16.3 m each



5.3.6 Reducer Yes

5.4 Inlet Pipe (reducer)

5.4.1 No.’s Two

5.4.2 Diameter 3.7m to 3.00m

5.4.3 Total length 3.0m



5.5 Penstock for Auxiliary Powerhouse

5.5.1 No.’s One

5.5.2 Diameter 3.30m

5.5.3 Total length 64.00m



5.5.6 No’s of Bifurcations Two

5.5.7 Diameter of Unit Penstock-1 2.35m

5.5.8 Length of Unit Penstock-1 24.20m

5.5.9 Diameter of Unit Penstock-2 1.65m

5.5.10 Length of Unit Penstock-2 26.20m

6 Power House Complex

6.1 Main Power House

6.1.1 Type & Location Surface & Right Bank

6.1.2 Type of turbine Vertical Francis

6.1.3 Installed Capacity 2 x 55 MW = 110 MW

6.1.4 Centre line of Turbine El. 98.80 m

6.1.5 Normal TWL 104.00 m

6.1.6 Min TWL (For one Unit) EL 103.20m

6.1.7 Top of Tail Race Channel Outlet Weir EL 102.00m

6.1.8 Minimum Size (L x W x H) 76.5m (L) x 19.1 m (W) x 30 m

(H)

6.1.9 Rated Gross Head 114.00 m

6.1.10 Head Loss through Water Conductor

system

6.00m

6.1.11 Rated Net Head 108.00 m

6.1.12 Rated Discharge Per Unit 56.355 Cumec

6.1.13 Service Bay Level EL 113.00m

6.1.14 HFL at Power House EL 111.66m

6.1.15 Grade of Concrete (Not in contact with

water)

M25

6.1.16 Grade of Concrete (In contact with

water)

M30


6.1.17 Grade of second stage Concrete for

Block outs

M30

6.2 Auxiliary Power House

6.2.1 Type & Location Surface, Right bank

6.2.2 Type of turbine Horizontal Francis

6.2.3 Installed Capacity 2 x 2.5 MW + 1 x 5 MW = 10 MW

6.2.4 Turbine Setting (Elevation) El 170.50 m

6.2.5 Normal TWL (Three Machines) El 169. 70 m

6.2.6 Min TWL (For one Unit) EL 169.16m

6.2.7 Invert of Tail Race Duct Outlet EL 167.50m

6.2.8 Minimum Size 50.5 m (L) x 10.0 m (W) x 27.0 m

(H)

6.2.9 Head Loss through Water Conductor

system

1.00m

6.2.10 Rated Net Head 47.30 m

6.2.11 Rated Discharge Per Unit 6.23 Cumec / 12.47 Cumec

6.2.12 Installed Capacity Per Unit 2.5 MW / 5 MW

6.2.13 Service Bay Level EL 186.50m

6.2.14 HFL at Aux Power House EL 185.34m

6.1.15 Grade of Concrete (Not in contact with

water)

M25

6.1.16 Grade of Concrete (In contact with

water)

M30

6.1.17 Grade of second stage Concrete for

Block outs

M30

7 Tailrace

7.1 Tailrace for Main Powerhouse

7.1.1 Width of Tailrace 26.00m

7.1.2 Invert of Start of Tailrace Channel EL 92.00m

7.1.3

Top of Tail Race Outlet Weir 102.00m (Min 1.00 m above

deepest River Bed Level)

7.1.4 Slope of Tailrace Channel 4 (H) :1 (V)


7.2 Tailrace for Auxiliary Powerhouse

7.2.1 Tailrace Ducts [2 Nos of 2m(W) x 1.8m (H) and 1

No of 3m (W) x 1.8m(H)] –

merging into (3+4) m(W) x

1.8m(H)

7.2.2 Invert at Start of Tailrace Duct (2.5MW)

Invert at Start of Tailrace Duct (5.0MW)

EL 163.50m

EL 161.40m

7.2.3

Invert atTail Race Duct Outlet 167.50m (Min 1.00 m above

deepest River Bed Level)

7.2.4 Slope of Tailrace Duct (2.5 MW)

Slope of Tailrace Duct (5MW)

Horizontal (34.69 m), 2.5 (H) :1

(V) (10 m)

13.19 (H) :1 (V) (27.7 m), 2.5 (H)

:1 (V) (10m)



8 Switchyard

8.1 Switch Yard for Main Power House

8.1.1 Voltage Level 220.00 kV

8.1.2 Minimum Size 146.00m x 72.00 m

8.1.3 Scheme Out Door

8.1.4 Finished Ground Level 167.00m

8.1.5 Gravel depth Min 150mm


8.2 Switchyard of Auxiliary Power

House

8.2.1 Voltage Level 33.00 kV

8.2.2 Minimum Size 21.00m x 24.00 m

8.2.3 Scheme Out door

8.2.4 Finished Ground Level 186.50m

8.2.5 Gravel depth Min 150mm



TO LANKA

KOPILI RIVER

N275

175

E 477500

E 478000

E 47850

0

E 479000E 479500

E 480000

E 480500

E 481000

E 48150

0

N 2838500

N 2839000

N 2839500

N 2840000

N 2840500

E 477500

E 478000

E 478500

E 479000 E 480000

E 480500

E 481000

E 481500

N 2838500N 2839000

N 2839500

N 2840000

N 2840500

N 2841000

N 2841500

N 2842000

DAM

HEADRACE TUNNELØ7.00 CIRCULARL=3641.22m ADIT-1

EXISTING ROAD

SWITCHYARD

POWER HOUSE

INTAKE

N 2841500

N 2841000

N 2842000

N 2842500

N 2842500

N 2843000

N 2843000VALVE HOUSE

SURGE SHAFTØ25.00

TAILRACECHANNEL

DAM AXIS

300

300275

250225 200

225 22

5

225 225 225

225 200

200

175150

125150

175

175

200215250

250

225215200

250

250

200

225

250

250

AUXILIARY POWER HOUSE

BUS COUPLER

Y

R

B

Y

R

B

2

ISO

CT

CB

ROAD

3m W

IDE

1

ROAD

3m W

IDE

ROAD 3m WIDE

ROAD 3m WIDE

3000

TO STA

TION SERV

ICE TRA

NSFORM

ER

GEN.

FEEDER-II

FROM

P.H.

GEN.

FEEDER-I FROM

P.H.

6m W

IDE GA

TE

Y

R

B

Y

R

B

TO LA

NKA S/S

FEDER-IV

FEDER-III

TO KAR

BI LANGPI

HEP

FEDER-II

FEDER-I

GATE

4

220KV BUS-A

220KV BUS-B

AD-0

HRT-1

HRT-3

HRT-4

SS-1

FLOW

VH-1

IN-1

10°

PS-2

PH-1

TRC-1

BEND-1

BEND-2

BEND-3

BEND-4

FLOW

Ø6.10m PRESSURE TUNNEL

TO GARAMPANI

Ø6.00m ADIT-1L= 354.66m

KOPILI RIVER

R100.00

HRT-2

DIVERSIONTUNNEL Ø10.50L=355.91m

U/S COFFER DAM

D/S COFFER DAM

PROPOSEDTEMPORARY BRIDGE

33°

R250.00

7°B

C PENSTOCK

L

A

C OF VALVE

L

PS-1

SHOTCRETE

LINING(INDICATIVE)

CL

SHOTCRETE

STEEL LINER

CL

Ø6.10BACKFILL

CONCRETE

Ø7.00

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© A

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witzerland Ltd. 20

11

The reproduction, distribution and utilization of this docum

ent as w

ell as the com

munication of its

contents to others w

ithout explicid authorization is prohibited. O

ffenders w

ill be held liable for the

paym

ent of dam

ages. A

ll rights reserved in the event of the grant of a patent, utility m

odel or design.

NOTE:

ASSAM P

OWE

R G

E NE R A T I O N C O R P O

RA

TIO

N L

IMITED

CHECKED:APPROVED:DATE:

DRAWING No. REV. No.

PREFEASIBILITY STUDYFEASIBILITY STUDY

DRAWN: FORMAT:SCALE:

INCEPT. & BASIC DESIGNTENDER DESIGN

CONSTRUCTION DESIGNAS-BUILT DRAWINGS

AF-ConsultSwitzerland Ltd.Täfernstrasse 26CH-5405 Baden/Switzerland

REVISION DESCRIPTION DRAWN CH'KED APP'D DATEREV.No.

ASSAM POWER GENERATION CORPORATION LTD.

LOWER KOPILI H.E. PROJECT (120MW)

PROJECT AREAGENERAL LAYOUTPLAN

RAK / KSBSAKMMB27.05.19

1:7500 A1

AFC.4294.00.004 0

1. ALL DIMENSIONS, NORTHING AND EASTING ARE IN METERS EXCEPT WHERE OTHERWISE NOTED.

00 10 m5

LAYOUT PLAN

FOR TENDER PURPOSE

REFERENCE DWGS:AFC.4294.00.005 PROJECT AREA

WATER CONDUCTOR SYSTEMGENERAL LAYOUT-LONGITUDINAL SECTION

AFC.4294.00.006 DAM AREAGENERAL LAYOUTLAYOUT PLAN

AFC.4294.00.007 SURGE SHAFT TO TAILRACE CHANNELGENERAL LAYOUTLAYOUT PLAN & LONGITUDINAL SECTION

SCHEDULE OF ADITSS. NO. NAME

ADIT-1

LENGTH (m)

354.66

FINISHED SIZE (m)

1. 6.0 (W) x6.00 (H) D-SHAPED

DESCRIPTION

CONSTRUCTION ADIT TO HRT

PS-2

SS-1

VH-1

PH-1TRC-1

SCHEDULE OF CONTROL POINTSNo. NORTHINGEASTING

IN-1HRT-1HRT-2

HRT-3

HRT-4

AD-0

5.0 m2.50

TYP. SECTION OF HRT

LEGEND:

PROPOSED ROAD

EXISTING ROAD

PLATE - 004

5.0 m2.50

TYP. SECTION OF PRESSURE SHAFT478147.36 2838749.68478189.27 2838797.52478208.37 2838819.34

480336.71 2841562.37 480356.96 2841563.88

480402.68 2842025.32480418.30 2842182.93

480366.24 2842265.25480327.98 2842324.67

479825.92 2840254.41480057.20 2840459.60

PS-1 480402.14 2842019.85

DATUM 50

120

160

200

240

CHAINAGE (m)

FINISHED INVERT-HRT / CENTER LINE EL. FOR

80

SS,PS & PENSTOCK

226.00 FRL / MWL

195.00

0.00

195.0

0ST

ART

OF IN

TAKE

HRT-

1 (PO

RTAL

FAC

E)

CURV

E ST

ART

CURV

E EN

D

NSL

IN-1

INTAKE

MATC

H LIN

E-1

NSL

184.1

1

Ø7.00m HEADRACE TUNNELCIRCULAR,(L=3641.22m)

1.34%

1.34%

63.58

189.5

022

5.49

86.29

188.3

223

8.68

98.87

188.1

524

4.93

72.58

188.5

023

0.86

229.00

STAR

T OF

HRT

NSL

MATC

H LIN

E-1

CONSTRUCTION ADIT-1(6.0x6.0m), D-SHAPE

AD-0

MATC

H LIN

E-1

2254

.9515

9.33

201.2

5

2490

.3015

6.19

220.2

9

2633

.8715

4.27

210.1

4

CURV

E ST

ART

CURV

E EN

D

1.34%1.34%

Ø7.00m HEADRACE TUNNELCIRCULAR,(L=3641.22m)

DATUM 50

120

160

200

240

CHAINAGE (m)


80

PS & PENSTOCK

226.00 FRL / MWL

NSL

DATUM 50

120

160

200

240

CHAINAGE (m)


80

PS & PENSTOCK

226.00 FRL / MWL

NSL

KOPILI RIVER

UNIT PENSTOCK Ø 3.7m98.80

POWERHOUSE

NSL

PORTAL

VALVE HOUSE

Ø 6.1m PRESSURE TUNNEL

SURGE SHAFT

237.50

0.16%

102.00

ROCK LINE

C OF

SUR

GE S

HAFT

L

C OF

VAL

VE H

OUSE

L C OF

POW

ER H

OUSE

L END

OF T

RC

Ø 5.2m EMBEDDEDPENSTOCK

PH-1

TRC-

1

VH-1

PS-2

SS-1

142.06

MATC

H LIN

E-1

3657

.7214

0.58

212.2

336

74.92

140.3

521

3.62

3701

.3014

3.50

212.6

7

4326

.8814

2.06

153.2

1

4435

.3098

.8011

5.30

4506

.9610

2.00

104.2

2

CURV

E ST

ART

CURV

E EN

D

HRT-

4 (EN

D OF

HRT

)37

04.80

143.5

021

2.45

140.00?

??

?

? ? ? ??

??

??

113.00

? ? ? ? ? ? C OF VALVE

40T

40T

L

PRES

SURE

TUN

NEL P

ORTA

LPS

-1

155.00

4163

.0014

2.33

162.1

8

4168

.5014

2.32

162.2

1

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© A

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onsult S

witzerland

Ltd. 2011


ent as w

ell as the com

munication of its



ffenders w


paym

ent of dam

ages. A


odel or design.

ASSAM P

OWE

R G

EN

E RA T I O N C O R P OR

AT

I ON

LIM

ITED











PROJECT AREAWATER CONDUCTOR SYSTEMLONGITUDINAL SECTION

RAK / KSBSAKMMB27.05.19

1:2500 A1

AFC.4294.00.005 0

125 m500

LONGITUDINAL SECTION(WATER CONDUCTOR SYSTEM)

FOR TENDER PURPOSE

LEGEND: ROCK LINE

NSL


GENERAL LAYOUTLAYOUT PLAN

AFC.4294.00.007 SURGE SHAFT TO TAILRACE CHANNELGENERAL LAYOUTLAYOUT PLAN & LONGITUDINAL SECTION

NOTE:1. ALL DIMENSIONS AND LEVEL ARE METERS EXCEPT SHOWN OTHERWISE.2. CONTRACTOR CAN EXAMINE TO EXCAVATE THIS PORTION THOUGH TUNNELING IN OVERBURDEN.

PLATE - 005

??

??

??

?

? ? ? ? ? ??

??

??

??

? ?

KOPILI RIVERØ7.0m HRT ?

UNIT PENSTOCK Ø3.7m

98.80

140.00

POWERHOUSE

461.70

NSL

PORTAL

VALVE HOUSE

Ø 6.1m PRESSURETUNNEL

SURGE SHAFT

158.38

ANCHOR BLOCK-2

113.00

237.50

0.16%

102.00

C OF

SUR

GE S

HAFT

L

PRES

SURE

TUN

NEL P

ORTA

L

C OF

VAL

VE H

OUSE

L

PS-2

C OF

POW

ER H

OUSE

L END

OF T

RC


PH-1

TRC-

1

VH-1

PS-1

SS-1

? ? ? ? ? ? ? ? ? ?

61.60 7.90 26.92

142.06

5.50

DH VH-01

DH PS-01DH PS-02

ASSUMED ROCK LINE

ROCK LINE

Ø 6.1m PENSTOCK

ANCHOR BLOCK-1

5.00(REDUCER)

1

1

2

2

C OF VALVE

40T

40T

L

155.00

COMPACTED BACKFILL

DATUM 50

120

140

160

180

200

220

240

260

100

CHAINAGE (m)

DISTANCE (m)

C/LLEVEL (m)

80

0.00

143.5

0

461.7

014

2.33

734.0

098

.80

805.6

610

2.00

461.70 5.50 158.38 71.6662

5.58

142.0

6108.42

467.2

014

2.32

139.04

E 480500

N 2841500

210

200

190

210

200 190

185

170

150160

140

Y

R

B

6m W

IDE

GATE

Y

R

B

YR

B

N 2841600

N 2841700

N 2841800

N 2841900

N 2842000

N 2842100

N 2842200

N 2842300

E 480400

E 480300

E 480200

205

180 175

165 155

145

Ø25.0m SURGE SHAFT

185

220 kV SWITCHYARDAT EL.167.00

ROAD TOSURGE SHAFT

ROAD TOPOWER HOUSE

KOPILI RIVER

POWER HOUSE

TAIL RACECHANNEL

N

205

195

200

190

AZ = 5.659

FLOOD PROTECTION WALL

130125

120 115

110

105

130125

120

N 28

4232

5

E 480400E 480300

E 480325

EXISTINGROAD

B

C PENSTOCKL

A

C OF VALVEL


AZ = 31

5.149

SS-1

PS-1

50.51°

PS-2 R25.00

HRT-4

ROAD TO VALVE HOUSE

ANCHOR BLOCK-1

VALVE HOUSE

DH VH-01 DH PS-01 DH PS-02

VH-1

461.705.50

158.38

PORTAL

ANCHOR BLOCK-2

Ø6.1m PRESSURETUNNEL

Ø6.1m PENSTOCK1

1

2

2

TRC-1

PH-1

E 480600

5.0 m2.50

SECTION 1-1

SHOTCRETE

STEEL LINER

CL

Ø6.10BACKFILL

CONCRETE

NSL

CL

VARIES

153.00

00 10 m5

SECTION 2-2

ASSUMEDROCK LINE

1

8

7.00

Ø6.10

Ø6.1m PENSTOCK

153.00

11.5

3.20

2.54.80

.805.1

6

155.00

ROCK EXCAVATIONArea = 129.65² m

Area = 111.63² mCOMPACTED BACKFILL

EXCAVATION IN OVERBURDENArea = 231.46² m

DRAIN

Area = 24.80² mCONCRETE

1

8

11.5

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odel or design.

ASSAM P

OWE

R G

EN


AT

I ON

LIM

ITED











SURGE SHAFT TO TAILRACE CHANNELGENERAL LAYOUTPLAN & SECTIONS

SCJ / KSBSAKMMB27.05.19

1:1500,1:250,1:100 A1

AFC.4294.00.007 0

1. ALL DIMENSIONS AND LEVEL ARE METERS EXCEPT SHOWN OTHERWISE.2. CONTRACTOR CAN EXAMINE TO EXCAVATE THIS PORTION THOUGH TUNNELING IN OVERBURDEN.

NOTES:

00 60 m30

LONGITUDINAL SECTION(SURGE SHAFT TO TAILRACE CHANNEL)

00 60 m30

PLAN(SURGE SHAFT TO TAILRACE CHANNEL)


GENERAL LAYOUTLAYOUT PLAN

SS-1

PS-1

VH-1

PH-1TRC-1

SCHEDULE OF CONTROL POINTSNo. NORTHINGEASTING

HRT-4 480356.96 2841563.88

480336.71 2841562.37

FOR TENDER PURPOSE

480402.14 2842019.85480402.68 2842025.32

LEGEND:ROCK LINE

NSL

CONCRETE

PLATE - 007

PS-2 480418.30 2842182.93

480366.24 2842265.25

480327.98 2842324.67

185

195

200

N 2839000

N

190

180

210

220

215

205

195

185

175

245

235

225

200

190

180

210

220

230

240

255

N 2838900E 478200

N 2838800

E 478300

N 2838600

N 2838800

E 477800

E 4780

00

E 478300

FRL

FRL

FRL

FRLFRLFRL

FRLFRLFRL

N 2838700 N 2839000

185

230

240

N 2838700 E 477800

E 478100

N 2838500

E 478400

E 478400

175

111.6

0

140.0

0

195

205

215

225

190

200

210

220

230

235

PLUNGE POOL

PROPOSED ROAD

RIGH

T BA

NKLE

FT B

ANK

PROPOSED TEMPORARYBRIDGE

PROPOSED ROAD

DAM

AXIS

DAM

AXIS

EXISTING ROAD

ROAD TODUMPYARD

PROPOSED ROAD

U/S COFFER DAM

Ø10.50 m DIVERSIONTUNNEL

L=355.91m

KOPILI RIVER

KOPILI RIVER

ACCESS TOINSPECTIONGALLERY

CONSTRUCTIONSULICE

D/S COFFER DAM

33kvSWITCHYARD

PROPOSED ROAD

185

ROAD TO AUXILIARYPOWER HOSUE

BRID

GE D

ECK

229.0

0

N 2838900

PROPOSED ROAD

178.0

0

Ø1.50mRIPARIANFLOW INLET

5.00

603.009

3.00

229.0

0 (DA

M TO

P)

156.00169.50

166.00

160.0

0

163.50

198.0

0

196.5

0

229.0

0

177.00

229.00

174.00

172.00

239.00

191.0

0

179.00

188.00

198.50

207.00

213.5

022

2.00

168.50

198.00

171.00

185.50

167.50

173.00179.50

187.50

179.50

198.00

209.00

219.00

229.00

239.00

177.50

204.00 (INTAKE TOP)

202.00

229.00

196.50

335.0

0

186.50

AUXILIARYPOWER HOUSE

503.009

503.009

1.7H-1V 1.7H-1V

181.0

0

184.00176.00168.00176.50

168.50

190.0

0

17.00

AUX.

INTA

KE

111.4

0NO

N OV

ER F

LOW

BLO

CK11

3.60

SPILL

WAY

BLO

CK

BA-1

BA-2

IN-1

STAIR CUMEQUIPMENTSHAFT

STAIR CUMELEVATORSHAFT

HRT PORTAL

229.00

STEELBRIDGE

ROAD TO ACCESS TOINSPECTION GALLERY

160.0

0

HRT Ø7.0m CIRCULAR

PACKAGE-2

PROPOSED ROAD(BY OTHERS)

PROPOSED ROAD

603.009

N:\@

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© A

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Ltd. 2011


ent as w

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odel or design.

00 30 m15

LAYOUT PLAN

ASSAM P

OWE

R G

EN


AT

I ON

LIM

ITED











DAM COMPLEXGENERAL ARRANGEMENT LAYOUT PLAN

KSBDKCMMB27.05.19

1:750 A1

AFC.4294.03.001 0

1. ALL DIMENSIONS, NORTHING & EASTING AND LEVELS ARE INMETERS EXCEPT WHERE OTHERWISE NOTED.

2. ALL CONTOURS ARE AT 1.0m INTERVALS.3. NO DIMENSION SHALL BE MEASURED FROM DRAWING. SECTION

SIZES ARE TENTATIVE ONLY AND ELEVATIONS WILL BE REMAINSAME AS PRESENTED IN CURRENT DRAWINGS.

4. FOUNDATION LINE SHOWN IN DRAWINGS ARE BASED ONGEOLOGICAL SECTION.

5. AFTER EXCAVATION, THE ACCEPTABLE FOUNDATION GRADESHOULD BE CONFIRMED IN CONSULTATION WITH THEGEOLOGIST.

6. THE PROFILE OF SLUICE SPILLWAY GLACIS, ENTRANCE PROFILE,LIP LEVEL, BUCKET INVERT ETC. ARE TENTATIVE AND SUBJECTTO CONFIRMATION BY THE HYDRAULIC MODEL STUDIES.

7. THE LOCATION, DEPTH AND EXTENT OF THE PLUNGE POOLSHALL BE AS PER THE RESULT OF THE HYDRAULIC MODELSTUDIES.

8. BRIDGE DECK BOTTOM EL. SHALL BE KEPT AT EL. 181.50. SPANOF THE BRIDGE SHOWN IN THE DRAWINGS IS TENTATIVE.

9. PIER THICKNESS SHALL NOT BE LESS THAN 4.50m IN SLUICESPILLWAY.

10. GUIDE WALL SHOWN IN THE DRAWING IS TENTATIVE AND SHALLBE MODIFIED AFTER HYDRAULIC MODEL STUDY.

CO-ORDINATESPOINTS EASTING NORTHING

BA-1 477972.94 2838588.48

BA-2 478193.66 2838840.49

IN-1 478147.36 2838749.68

REFERENCE DRAWINGS:

AFC.4294.03.003

AFC.4294.03.005

AFC.4294.03.006

AFC.4294.03.007

AFC.4294.03.008

UPSTREAM VIEW

OVERFLOW SPILLWAY - SECTION 1-1

CONSTRUCTION SLUICE - SECTION 2-2

DEBRIS SPILLWAY - SECTION 3-3

STAIRCASE & ELEVATOR SHAFT - SECTION 4-4

AFC.4294.03.009 SECTIONS

AFC.4294.03.002 DAMGENERAL ARRANGEMENTPLAN

AFC.4294.03.004 DOWNSTREAM VIEW

NOTES:

FOR TENDER PURPOSE

PLATE - 038

* THE DEPTH, AND EXTENT OF PLUNGE POOL WILL BE STUDIED INHYDRAULIC MODEL STUDY, WHICH IS UNDER PROCESS, ANYCHANGE OF PLUNGE POOL AREA WILL BE INTIMITATED LATER ON.

??

?

LEFT BANKNSL

12 13

20

7

5

17.60BLOCK-14

?

?

?

25.00BLOCK-20

RIGHT BANK

ROCK LINE

8 9 10 11 14

15643

2

105.60SPILLWAY BLOCK

7.0017.60BLOCK-13

17.60BLOCK-12

17.60BLOCK-11

17.60BLOCK-10

17.60BLOCK-9

8.00BLOCK-8

17.00BLOCK-17

17.00BLOCK-19

17.00BLOCK-6

17.00BLOCK-5

17.00BLOCK-4

17.00BLOCK-3

17.00BLOCK-2

9.40BLOCK-1

303.007

303.007

403.008

403.008

1

2.00 7.60 10.00 3.80

111.40NON OVER FLOW BLOCK

8.00 DEBRIS SPILLWAY BLOCK

226.00 FRL/MWL222.00

213.50

198.50

188.00

168.50

229.00 TOP OF DAM

207.00

226.00229.00

239.00

5.00

5.00

5.00

5.00

5.00

POWER PACK ROOM

103.005

103.005

INSPECTION GALLERY

FOUNDATIONGALLERY

STAIR CUM ELEVATORSHAFT

SUMP WELL

CJ

DEBRIS SPILLWAY4.0m(W)X3.0m(H)

VI NOS. SLUICE SPILLWAY9.60m(W) X 12.0m(H)

00 30 m15

UPSTREAM VIEW

I II

III IV

V VI

200.50

203.006

203.006

NSL

ROCK LINE

DRIFT DL1

DRIFT DL2

Ø1.50m RIPARIANFLOW INLET

223.00

4.00

7.60 10.007.60 10.007.60 10.007.60 10.0010.00

2.00

3.80

17.00BLOCK-7

226.00

18 19

202.50

16

179.00

5.00

17

17.00BLOCK-18

CONSTRUCTION SLUICE5.0X5.0m

STAIR CUMEQUIPMENTSHAFT

DRIFT DR2

DRIFT DR1

DRIFT DL1

DRIFT DL2

170.50

164.50

93.00NON OVER FLOW BLOCK

15.30

Ø10.5m DIVERSIONTUNNEL

173.39

335.00

17.00BLOCK-15

17.00BLOCK-16

162.50

167.50

173.00

179.50

187.50

198.00

209.00

9.005.00

5.00

5.00

5.00

CROSS GALLERY

INSPECTION GALLERY

FOUNDATION LINE

5.00

ACCESS TO INSPECTIONGALLERY

INSPECTION GALLERY

CJ CJ CJ CJ CJ

CJ

CJ

CJ CJ CJ

CJ CJ

CJ CJ CJ CJ

CJ

CJ

AUXILIARYINTAKE

195.00

181.50

AUXILIARY POWER INTAKE

205.70

?

??

?

?

?

?

? ? ? ??

?

??

?

?

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??

??

??

??

??

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?

?

?

?

?

?

?

?

?

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?

???

??

?????

?

? ? ? ? ? ? ? ??

??

??

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181.50

190.00 198.00

182.00

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NOTE:1. FOR NOTES, ALL REFERENCE DWGS. AND LEGEND REFER TO DWG. NO. AFC.4294.03.001.

FOR TENDER PURPOSE

ASSAM P

OWE

R G

EN

E R A T I O N C O R P OR

AT

I ON

LIM

ITED











DAM COMPLEXGENERAL ARRANGEMENTUPSTREAM VIEW

KSBDKCMMB27.05.19

1:750 A1

AFC.4294.03.003 0

PLATE - 040

7.50

5.5

DAM

AXIS

ENTRANCEPROFILE

ORIGIN

20.0(APRON)

X =120Y2

29.707.50 35.30

8.50 15.0

NSL

1

X

Y

T.P2BUCKET INVERT

CONSTRUCTION SLUICE

(Q=11030 CUMECS)

00 10 m5

SECTION 1-1MAX. OVERFLOW BLOCK

2.50

229.00 (TOP OF DAM)

162.50

226.00 FRL/MWL

202.00 MDDL

226.00

87.50

205.50

190.00

182.00

181.50

173.00

202.00

179.17

182.64

185.50

1.50

190.00

185.34 (TWL)

163.50

157.50

5.25

6.50

INSPECTION GALLERY

21

21

1.00

11

11

VARIES

CLADDING WALL

3.002.00

INSTRUMENTATION GALLERY

DRAINAGE HOLESCURTAIN GROUTING DRAINAGE SUMP

0.2Ø FORMED [email protected] c/c

FOUNDATIONGALLERY

2.50

12

1.50

BRIDGE (INDICATIVE)

X

Y

0.581

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

ROCKLINE

STOPLOG GATEGROOVE

GANTRY CRANE

206.87

216.00

166.00

169.50

180.00

x² y²6² 3²

1y²3² ORIGIN

3.00

195.50

214.17

229.00

0.50(H) : 1.0(V)

Ø0.30m MSAIRVENT PIPE

CONSOLIDATION GROUTING,6.0m DEEP @ 3.0m c/c (TYP.)

198.00

HOODED CONE DISCHARGEVALVE

SLIDE VALVE

Ø1.50m RIPARIANFLOW INLET(SEE NOTE-2) 1.5

0

33.505.30 3.18 2.83 4.00

11.72

POWER PACK ROOM (7.0m x 3.8m)(IN EVERY ALTERNATE BLOCKS)

186.00

4.0

5.00

171.00

3.194.49

196.50

176.00

11.72

5.00

SHIP LADDERS

5.50

11

R4.00

35.00°

R35.0

0

25.77°

202.50

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is do

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rs wi

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thoriz

ation

is pr

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ffend

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ill be

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liable

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of a p

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desig

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FOR TENDER PURPOSE

NOTES:1. FOR NOTES, ALL REFERENCE DWGS. AND LEGEND REFER TO DWG. NO. AFC.4294.03.001.2. BALANCE REPARIAN DISCHARGE OF 6.54m³/s THROUGH Ø1.50m RIPARIAN PIPE

PROVIDED IN DAM BLOCK - 13.

ASSAM P

OWE

R G

EN


AT

I ON

LIM

ITED











DAM COMPLEXGENERAL ARRANGEMENTOVERFLOW SPILLWAY & SECTION 1-1

KSBDKCMMB27.05.19

1:250 A1

AFC.4294.03.005 0

PLATE - 042

7.505.50

0.851

DAM

AXIS

87.50

67.50 20.00(APRON)

T.P2

229.00 (TOP OF DAM)

226.00 FRL/MWL

202.00 MDDL

223.00

213.28

186.50 (Q=11030 CUMECS)185.34 (TWL)

168.50

222.00

12.75

163.50

216.50

211.00

224.00

3.50

T.P1 220.47

R76.0

0

173.00

181.50

170.50

INSPECTION GALLERY

FOUNDATION GALLERY

VERTICAL GATE4.0m (W)X3.0m (H)

262.50

49.64°

2.50

2.57

2.25

12

0.2Ø FORMEDDRAIN @3.0m c/c

3.00 2.00

2.50

2.50

00 10 m5

SECTION 3-3THROUGH DEBRIS SPILLWAY

NSL

190.00 TRAINING WALL

3.50

0.50(H) : 1.0(V)

169.50

180.00

Ø0.30m VENTILATIONPIPES

CONSOLIDATION GROUTING,6.0m DEEP @ 3.0m c/c (TYP.)

DRAINAGE HOLECURTAIN GROUTING

X1.85 = 2(H ) Y0.85dXX

Y

5.50

5.00

5.00

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nts to

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thout

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thoriz

ation

is pr

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ffend

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ill be

held

liable

for t

hepa

ymen

t of d

amag

es. A

ll righ

ts re

serve

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ent o

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rant

of a p

atent,

utilit

y mod

el or

desig

n.

FOR TENDER PURPOSE

NOTE:1. FOR NOTES, ALL REFERENCE DWGS. AND LEGEND REFER TO DWG. NO. AFC.4294.03.001.

PLATE - 044

ASSAM P

OWE

R G

EN


AT

I ON

LIM

ITED











DAM COMPLEXGENERAL ARRANGEMENTDEBRIS SPILLWAY - SECTION 3-3

KSBDKCMMB27.05.19

1:250 A1

AFC.4294.03.007 0

ID Task Mode

WBS Task Name Start Finish

1 1 Implementation of Lower Kopili HEP (120 MW) Mon 02‐12‐19 Thu 30‐11‐23

2 1.1 Civil & Hydromechanical Works including Road works Mon 02‐12‐19 Thu 30‐11‐23

3 1.1.1 Procurement Process Mon 02‐12‐19 Mon 02‐12‐19

4 1.1.1.1 Notice to Proceed Mon 02‐12‐19 Mon 02‐12‐19

5 1.1.2 Post Award Works (Construction and Commissioning) Tue 03‐12‐19 Thu 30‐11‐23

6 1.1.2.1 Mobilisation of Machinery for River Diversion & Road Grading Tue 03‐12‐19 Wed 01‐01‐20

7 1.1.2.2 Grading of Road (cutting & filling) up to D/s Bailey Bridge location at right bank Thu 02‐01‐20 Fri 31‐01‐20

8 1.1.2.3 Balnce Mobilisation of Machinery Thu 02‐01‐20 Tue 05‐01‐21

9 1.1.2.4 Engineering & Design Tue 03‐12‐19 Mon 11‐01‐21

10 1.1.2.4.1 Survey/Investigation Tue 03‐12‐19 Wed 03‐06‐20

11 1.1.2.4.2 Detail Engineering Wed 18‐12‐19 Mon 11‐01‐21

12 1.1.2.4.2.1 Design Submission Wed 18‐12‐19 Mon 21‐12‐20

13 1.1.2.4.2.2 Design approval Wed 08‐01‐20 Mon 11‐01‐21

14 1.1.2.5 Infrastructure (to be handed over to client after completion of works) Mon 03‐02‐20 Mon 04‐05‐20

15 1.1.2.5.1 Quality Lab Mon 03‐02‐20 Mon 04‐05‐20

16 1.1.2.5.2 Hydromechanical Workshop Mon 03‐02‐20 Mon 04‐05‐20

17 1.1.2.5.3 Electromechanical Workshop Mon 03‐02‐20 Mon 04‐05‐20

18 1.1.2.5.4 P&M Workshop Mon 03‐02‐20 Mon 04‐05‐20

19 1.1.2.6 Roads Wed 15‐01‐20 Thu 03‐09‐20

20 1.1.2.6.1 New Roads Wed 15‐01‐20 Thu 03‐09‐20

21 1.1.2.6.1.1 Grading with Temporary supports of existing Road ‐ NH to Dam crest‐R16 Mon 03‐02‐20 Tue 03‐03‐20

22 1.1.2.6.1.2 Grading with Temporary supports of Road to Dam Toe, Intake & Cofferdam‐R1 Wed 04‐03‐20 Mon 04‐05‐20

23 1.1.2.6.1.3 Grading with Temporary supports of Road to Reha area‐R2 & R2A Wed 15‐01‐20 Wed 15‐04‐20

24 1.1.2.6.1.4 Grading with Temporary supports of Road to Rock quarry & Helipad‐R3 Wed 15‐01‐20 Wed 15‐04‐20

25 1.1.2.6.1.5 Grading with Temporary supports of Road to Magzine‐R4 Wed 15‐01‐20 Wed 15‐04‐20

26 1.1.2.6.1.6 Grading with Temporary supports of Road to Dumping Area‐R5 Wed 04‐03‐20 Wed 03‐06‐20

27 1.1.2.6.1.7 Grading with Temporary supports of Road to Adit portal‐R6 Wed 04‐03‐20 Wed 03‐06‐20

28 1.1.2.6.1.8 Grading with Temporary supports of Road to Adit Portal to Dumping area‐R6A Thu 04‐06‐20 Thu 03‐09‐20

29 1.1.2.6.1.9 Grading with Temporary supports of Road to Permanent/Temporary colony‐R7 Wed 04‐03‐20 Tue 28‐04‐20

30 1.1.2.6.1.10 Grading with Temporary supports of Road to Hydromechanical workshop‐R8 Wed 15‐01‐20 Fri 28‐02‐20

31 1.1.2.6.1.11 Grading with Temporary supports of Road from Hydromechanical workshop to Electromechanical workshop‐R9

Mon 02‐03‐20 Wed 15‐04‐20

32 1.1.2.6.1.12 Grading with Temporary supports of Road to Surge Shaft‐R10 Wed 15‐01‐20 Thu 13‐02‐20

33 1.1.2.6.1.13 Grading with Temporary supports of Road to Valve House‐R10A Wed 15‐01‐20 Mon 16‐03‐20

34 1.1.2.6.1.14 Grading with Temporary supports of Road from Switch yard to to Horizontal Pressure Shaft and Valve House‐New Road Proposed

Tue 05‐05‐20 Wed 03‐06‐20

35 1.1.2.6.1.15 Grading with Temporary supports of Road to Dyke area‐R11 Wed 15‐01‐20 Mon 16‐03‐20

Jun Jul AugSepOctNovDec Jan FebMarAprMayJun Jul AugSepOctNovDec JanFebMarAprMayJun Jul AugSepOctNovDec JanFebMarAprMayJun Jul AugSepOctNovDec JanFebMarAprMayJun Jul AugSepOctNovDec Jan FebM2020 2021 2022 2023 2024Y2 Y3 Y4 Y5 Y6

Task

Split

Milestone

Summary

Project Summary

Inactive Task

Inactive Milestone

Inactive Summary

Manual Task

Duration-only

Manual Summary Rollup

Manual Summary

Start-only

Finish-only

External Tasks

External Milestone

Deadline

Progress

Manual Progress

Critical

Critical Milestone

120 MW LOWER KOPILI HEP Program of Works

Page 1

Project: Project ImplementationDate: Fri 24-05-19


ID Task Mode


36 1.1.2.6.1.16 Grading with Temporary Supports of existing road‐ NH to Main Powerhouse‐R17 Wed 04‐03‐20 Thu 02‐04‐20

37 1.1.2.6.1.17 Grading with Temporary Supports of Road to Main Powerhouse‐R13 Fri 03‐04‐20 Mon 04‐05‐20

38 1.1.2.6.1.18 Grading with Temporary supports of Road from Dam top to Auxiliary Powerhouse‐R14 Wed 04‐03‐20 Mon 04‐05‐20

39 1.1.2.6.1.19 Grading with Temporary supports of Road from Dam top to Dumping area‐R14A Wed 25‐03‐20 Wed 24‐06‐20

40 1.1.2.7 Maintenance including drainage works of all roads Fri 04‐09‐20 Thu 01‐06‐23

41 1.1.2.8 Asphalting works of all roads Fri 30‐06‐23 Thu 30‐11‐23

42 1.1.2.9 Handover to Client Thu 30‐11‐23 Thu 30‐11‐23

43 1.1.2.10 River Diversion Works Mon 03‐02‐20 Mon 15‐03‐21

44 1.1.2.10.1 Downstream Bridge (Bailey bridge) Mon 03‐02‐20 Fri 18‐09‐20

45 1.1.2.10.1.1 Temprary river crossing using pipe culvert Mon 03‐02‐20 Mon 17‐02‐20

46 1.1.2.10.1.2 Shifting of machinery from Left bank to right bank (assuming the water depth in the riveris 1 meter as noticed in 2018)

Tue 18‐02‐20 Mon 24‐02‐20

47 1.1.2.10.1.3 Excavation & Concrete works for bridge abutments‐Right Bank Mon 03‐02‐20 Tue 03‐03‐20

48 1.1.2.10.1.4 Excavation & Concrete works for bridge abutments‐Left Bank Tue 18‐02‐20 Wed 18‐03‐20

49 1.1.2.10.1.5 Bailey bridge Erection Thu 19‐03‐20 Fri 18‐09‐20

50 1.1.2.10.2 Diversion Tunnel (DT) Tue 25‐02‐20 Wed 11‐11‐20

51 1.1.2.10.2.1 From Outlet Portal Tue 25‐02‐20 Fri 10‐07‐20

52 1.1.2.10.2.1.1 Grading of Access road to Outlet Portal (after crossing the machineries from right bankto left bank)

Tue 25‐02‐20 Tue 10‐03‐20

53 1.1.2.10.2.1.2 Portal Development Wed 11‐03‐20 Wed 25‐03‐20

54 1.1.2.10.2.1.3 Underground Excavation with rock support ‐240 m Thu 26‐03‐20 Thu 25‐06‐20

55 1.1.2.10.2.1.4 Shotcrete Lining Fri 26‐06‐20 Fri 10‐07‐20

56 1.1.2.10.2.2 From Inlet Portal Wed 11‐03‐20 Tue 11‐08‐20

57 1.1.2.10.2.2.1 Grading of Access road to Inlet Portal Wed 11‐03‐20 Thu 09‐04‐20

58 1.1.2.10.2.2.2 Temporary dyke to prevent inflow of water into DT Fri 10‐04‐20 Mon 11‐05‐20

59 1.1.2.10.2.2.3 Portal Development Tue 12‐05‐20 Wed 10‐06‐20

60 1.1.2.10.2.2.4 Underground Excavation with rock support‐116 m Thu 11‐06‐20 Mon 27‐07‐20

61 1.1.2.10.2.2.5 Shotcrete Lining Tue 28‐07‐20 Tue 11‐08‐20

62 1.1.2.10.2.3 Invert Lining along full length of Tunnel Wed 12‐08‐20 Thu 10‐09‐20

63 1.1.2.10.2.4 Diversion Tunnel Inlet structure Concrete & HM works Fri 11‐09‐20 Wed 11‐11‐20

64 1.1.2.10.3 Coffer Dams Thu 12‐11‐20 Mon 15‐03‐21

65 1.1.2.10.3.1 Dyke for River Diversion & River diverted through DT Thu 12‐11‐20 Fri 11‐12‐20

66 1.1.2.10.3.2 Construction of u/s Colcrete Cofferdam Mon 14‐12‐20 Mon 15‐03‐21

67 1.1.2.10.3.3 Construction of d/s Cofferdam Wed 13‐01‐21 Mon 15‐03‐21

68 1.1.2.11 Dam Tue 16‐03‐21 Thu 08‐06‐23

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69 1.1.2.11.1 Abutment stripping including rock support‐80,000 cum Tue 16‐03‐21 Wed 15‐09‐21

70 1.1.2.11.2 Riverbed Excavation‐260,000 cum Thu 16‐09‐21 Wed 16‐02‐22

71 1.1.2.11.3 Mass Concrete up to Dam Crest with Consolidation Grouting‐1,47,574 cum Thu 17‐02‐22 Mon 20‐06‐22

72 1.1.2.11.4 Concreting in Spillway and Piers‐66,081 cum Tue 21‐06‐22 Mon 27‐03‐23

73 1.1.2.11.5 Concreting in NOF Blocks‐1,87,963 cum Mon 21‐03‐22 Mon 27‐03‐23

74 1.1.2.11.6 Installation of Spillway Radial Gates Wed 21‐09‐22 Thu 23‐03‐23

75 1.1.2.11.7 Curtain Grouting Mon 06‐06‐22 Thu 06‐04‐23

76 1.1.2.11.8 Construction of bridge (steel girder with concrete slab) over Spillway Piers Tue 28‐03‐23 Thu 08‐06‐23

77 1.1.2.12 Dam Impounding Fri 09‐06‐23 Fri 08‐09‐23

78 1.1.2.13 Water Conductor filling Mon 11‐09‐23 Tue 10‐10‐23

79 1.1.2.14 Intake Tue 16‐03‐21 Mon 21‐11‐22

80 1.1.2.14.1 Excavation with supports of Intake Portal level Tue 16‐03‐21 Thu 15‐07‐21

81 1.1.2.14.2 Excavation with supports from portal level to foundation level Fri 16‐07‐21 Wed 15‐09‐21

82 1.1.2.14.3 Concreting of Intake ‐ First stage Thu 16‐09‐21 Thu 19‐05‐22

83 1.1.2.14.4 Erection of Gates Fri 20‐05‐22 Tue 20‐09‐22

84 1.1.2.14.5 Concreting of Intake ‐ Second stage Wed 21‐09‐22 Mon 21‐11‐22

85 1.1.2.14.6 Construction of Feeder Duct including steel liner Thu 16‐09‐21 Thu 16‐12‐21

86 1.1.2.15 Adit constructions Thu 04‐06‐20 Fri 04‐12‐20

87 1.1.2.15.1 Construction of Intermediate Adit Thu 04‐06‐20 Fri 04‐12‐20

88 1.1.2.15.1.1 Open excavation with supports Thu 04‐06‐20 Fri 03‐07‐20

89 1.1.2.15.1.2 Portal formation Mon 06‐07‐20 Tue 04‐08‐20

90 1.1.2.15.1.3 Excavation with supports of Adit Tunnel Wed 05‐08‐20 Fri 04‐12‐20

91 1.1.2.16 Head Race Tunnel Mon 07‐12‐20 Mon 10‐04‐23

92 1.1.2.16.1 Excavation Mon 07‐12‐20 Tue 07‐06‐22

93 1.1.2.16.1.1 Excavation with supports of HRT ‐ Face‐1 (from Intake towards Adit)‐900M Fri 16‐07‐21 Tue 07‐06‐22

94 1.1.2.16.1.2 Excavation with supports of HRT‐ Face‐2 (u/s face of Adit towards Intake)‐1291M Mon 07‐12‐20 Tue 19‐04‐22

95 1.1.2.16.1.3 Excavation with supports of HRT ‐ Face‐3 (d/s face of adit towards Surge Shaft)‐1050M Wed 06‐01‐21 Tue 18‐01‐22

96 1.1.2.16.1.4 Excavation with supports of HRT ‐Face‐4 (u/s of Surge Shaft towards adit)‐400M Tue 23‐03‐21 Fri 13‐08‐21

97 1.1.2.16.2 Concrete lining including Grouting Mon 16‐08‐21 Fri 10‐03‐23

98 1.1.2.16.2.1 Removal of Undercuts and Gantry erection ‐ B/w Intake & Intermediate adit Wed 08‐06‐22 Thu 07‐07‐22

99 1.1.2.16.2.2 Removal of Undercuts and Gantry erection ‐ B/w Intermediate adit and surge bottom Wed 19‐01‐22 Thu 17‐02‐22

100 1.1.2.16.2.3 Lining of HRT ‐ Face‐1 (towards Intake)‐ 900 m Fri 08‐07‐22 Tue 08‐11‐22

101 1.1.2.16.2.4 Consolidation Grouting Wed 09‐11‐22 Fri 23‐12‐22

102 1.1.2.16.2.5 Contact Grouting Mon 26‐12‐22 Wed 08‐02‐23


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103 1.1.2.16.2.6 Lining of HRT ‐ Face‐2 (towards Adit) ‐ 1291 m Fri 08‐07‐22 Fri 30‐12‐22

104 1.1.2.16.2.7 Consolidation Grouting Wed 09‐11‐22 Mon 09‐01‐23

105 1.1.2.16.2.8 Contact Grouting Tue 10‐01‐23 Fri 10‐03‐23

106 1.1.2.16.2.9 Grouting & Lining of HRT ‐ Face‐3 (between adit and Surge Shaft towards adit) and balance 300 m of Face‐4 ‐ 1350 m

Fri 18‐02‐22 Thu 13‐10‐22

107 1.1.2.16.2.10 Consolidation Grouting Fri 14‐10‐22 Thu 29‐12‐22

108 1.1.2.16.2.11 Contact Grouting Fri 30‐12‐22 Thu 23‐02‐23

109 1.1.2.16.2.12 Erection of Steel liner for 100m length of HRT u/s of Surge shaft Mon 16‐08‐21 Thu 14‐10‐21

110 1.1.2.16.3 Plugging of Adit with Installation of Bulkhead gate Mon 13‐03‐23 Mon 10‐04‐23

111 1.1.2.17 Surge Shaft Fri 14‐02‐20 Wed 22‐12‐21

112 1.1.2.17.1 Open excavation ‐ 32,290 cum Fri 14‐02‐20 Wed 15‐04‐20

113 1.1.2.17.2 Erection of Gantry Thu 16‐04‐20 Fri 15‐05‐20

114 1.1.2.17.3 Excavation of Main Shaft‐25 m dia Mon 18‐05‐20 Fri 16‐10‐20

115 1.1.2.17.4 Excavation of Riser Shaft‐ 7 m dia Mon 19‐10‐20 Thu 17‐12‐20

116 1.1.2.17.5 Steel Liner erection and back filling in Riser shaft Fri 18‐12‐20 Wed 17‐02‐21

117 1.1.2.17.6 Bottom Raft Concrete Thu 18‐02‐21 Fri 19‐03‐21

118 1.1.2.17.7 Formwork erection (slip form) Mon 22‐03‐21 Tue 20‐04‐21

119 1.1.2.17.8 Lining & Grouting of underground Surge shaft Wed 21‐04‐21 Fri 20‐08‐21

120 1.1.2.17.9 Concrete of free standing Surge shaft Mon 23‐08‐21 Wed 22‐12‐21

121 1.1.2.18 Valve House including E&M works Mon 27‐06‐22 Thu 11‐05‐23

122 1.1.2.18.1 Raft Concrete up to 137.50 m Mon 27‐06‐22 Mon 11‐07‐22

123 1.1.2.18.2 Wall Construction up to 155.00 m Tue 12‐07‐22 Tue 11‐10‐22

124 1.1.2.18.3 Compacted backfill up to 155.00 m Wed 12‐10‐22 Thu 10‐11‐22

125 1.1.2.18.4 Column and Beams including Crane Beam Fri 11‐11‐22 Fri 10‐02‐23

126 1.1.2.18.5 Roof Structure Mon 13‐02‐23 Tue 14‐03‐23

127 1.1.2.18.6 Erection and Commissioning of Valve house crane Wed 15‐03‐23 Wed 12‐04‐23

128 1.1.2.18.7 Erection & Commissioning of Butterfly valve Thu 13‐04‐23 Thu 11‐05‐23

129 1.1.2.19 Pressure Shaft & Penstock Thu 04‐06‐20 Tue 11‐10‐22

130 1.1.2.19.1 Open Excavation of Top horizontal surface Penstock (158 m) ‐ 57,000 cum Thu 04‐06‐20 Mon 05‐10‐20

131 1.1.2.19.2 Installation of Top Surface Penstock and Concrete encasing(158 m) Mon 27‐06‐22 Mon 26‐09‐22

132 1.1.2.19.3 Compacted backfill of Top surface Penstock Wed 27‐07‐22 Tue 11‐10‐22

133 1.1.2.19.4 Underground excavation with supports of top horizontal portion of Pressure shaft‐462 M Tue 06‐10‐20 Mon 22‐03‐21

134 1.1.2.19.5 Steel Liner in top horizontal portion with backfilling ‐462 m Fri 15‐10‐21 Fri 24‐06‐22

135 1.1.2.19.6 Excavation with supports of Inclined and bottom Penstock Tue 06‐10‐20 Tue 08‐06‐21

136 1.1.2.19.7 Installation of Penstock of inclined and bottom ‐ 160 m Wed 09‐06‐21 Wed 09‐02‐22

137 1.1.2.20 Tail Race Channel Tue 01‐12‐20 Mon 04‐10‐21

138 1.1.2.20.1 Excavation Tue 01‐12‐20 Tue 02‐03‐21


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139 1.1.2.20.2 Concrete Wed 03‐03‐21 Fri 02‐07‐21

140 1.1.2.20.3 Outfall arrangement (cofferdam) Mon 05‐07‐21 Mon 04‐10‐21

141 1.1.2.21 Switch Yard Tue 01‐12‐20 Wed 03‐11‐21

142 1.1.2.21.1 Excavation and levelling Tue 01‐12‐20 Tue 02‐03‐21

143 1.1.2.21.2 Civil works and fencing Wed 03‐03‐21 Fri 02‐07‐21

144 1.1.2.21.3 Installation of Equipment Mon 05‐07‐21 Wed 03‐11‐21

145 1.1.2.22 Power House Complex (Auxillary) including E&M works Fri 17‐12‐21 Thu 30‐11‐23

146 1.1.2.22.1 Civil & HM Works Fri 17‐12‐21 Fri 20‐01‐23

147 1.1.2.22.1.1 Conductor System Fri 17‐12‐21 Tue 19‐04‐22

148 1.1.2.22.1.2 Power House Wed 20‐04‐22 Thu 20‐10‐22

149 1.1.2.22.1.3 TRC Fri 21‐10‐22 Fri 20‐01‐23

150 1.1.2.22.1.4 Switch Yard Fri 21‐10‐22 Fri 20‐01‐23

151 1.1.2.22.2 EM Works ‐ Auxillary Plant Mon 23‐01‐23 Thu 30‐11‐23

152 1.1.2.22.2.1 EM Installations Mon 23‐01‐23 Fri 21‐07‐23

153 1.1.2.22.2.2 Unit Dry comissioning Mon 24‐07‐23 Tue 22‐08‐23

154 1.1.2.22.2.3 Unit Wet comissioning Wed 01‐11‐23 Thu 30‐11‐23

155 1.1.2.23 Power House Complex (Main) including E&M works Mon 03‐02‐20 Fri 28‐04‐23

156 1.1.2.23.1 Award of Contract to E&M Vendor Mon 03‐02‐20 Mon 03‐02‐20

157 1.1.2.23.2 Design period-E&M Mon 03‐02‐20 Mon 11‐05‐20

158 1.1.2.23.3 Civil-E&M interface for finalisattion Powerhouse excavatiion setting out Tue 12‐05‐20 Wed 10‐06‐20

159 1.1.2.23.4 Civil design for Power House excavation (Stability analysis etc) Thu 11‐06‐20 Mon 31‐08‐20

160 1.1.2.23.5 Power house & Tailrace excavation below EL 113.0 Tue 15‐09‐20 Mon 30‐11‐20

161 1.1.2.23.6 Earthmat installation and mud concreting Tue 01‐12‐20 Tue 15‐12‐20

162 1.1.2.23.7 Draft tube First stage concreting (Unit-1 & 2) including Drainage & Dewatering Sump

Wed 16‐12‐20 Fri 12‐02‐21

163 1.1.2.23.8 MIV floor raft (including drainage & dewatering Gallery) concreting for both unitsincluding embeddments for Spiralcase

Mon 15‐02‐21 Tue 13‐04‐21

164 1.1.2.23.9 Concrete walls all four sides (including Draft tube gate Piers) upto Service bay Wed 14‐04‐21 Mon 12‐07‐21

165 1.1.2.23.10 Unit-1 Draft tube erection by Tower Crane including concrete encasement Wed 14‐04‐21 Thu 13‐05‐21

166 1.1.2.23.11 Unit-2 Draft tube erection by mobile Crane including concrete encasement Wed 28‐04‐21 Fri 28‐05‐21

167 1.1.2.23.12 Control room building including brick walls, flooring & finishing Tue 13‐07‐21 Fri 07‐01‐22

168 1.1.2.23.13 Erection & testing of Penstock Y-Piece including inclined Penstock upto EL. 113.0 Wed 14‐04‐21 Mon 12‐07‐21

169 1.1.2.23.14 Concrete encasement of Y-Piece including inclined Penstock upto EL. 113.0 Tue 13‐07‐21 Fri 10‐09‐21

170 1.1.2.23.15 Soil backfill at three sides of Powerhouse building Mon 13‐09‐21 Fri 24‐09‐21

171 1.1.2.23.16 Part Service bay Raft and Concrete super struture upto Crane beam level for Service bay, Unit-1&2

Tue 01‐12‐20 Fri 12‐02‐21

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172 1.1.2.23.17 Steel Super Sructure for part Service bay including roofing & cladding Mon 15‐02‐21 Mon 29‐03‐21

173 1.1.2.23.18 Erection & Testing of EOT Crane at Service bay Tue 30‐03‐21 Thu 13‐05‐21

174 1.1.2.23.19 Machine hall Concrete super structure upto Crane beam level (Unit‐1 & 2) including completion of remaining Service bay Super structure adjoining Unit‐1

Tue 13‐07‐21 Wed 20‐10‐21

175 1.1.2.23.20 Steel Super Sructure all for full Machine Hall (Unit‐1 & 2) including roofing & cladding Thu 21‐10‐21 Fri 03‐12‐21

176 1.1.2.23.21 Concrete Deck slab for Draft tube gate Operating Floor Tue 13‐07‐21 Fri 10‐09‐21

177 1.1.2.23.22 Erection of Gantry Crane for Draft tube gates Mon 13‐09‐21 Tue 09‐11‐21

178 1.1.2.23.23 Erection of DT Gate for Unit-1 Wed 10‐11‐21 Fri 07‐01‐22

179 1.1.2.23.24 Erection of DT Gate for Unit-2 Mon 10‐01‐22 Wed 09‐03‐22

180 1.1.2.23.25 Erection and testing of Spiralcase for Unit-1 Mon 06‐12‐21 Tue 18‐01‐22

181 1.1.2.23.26 Encasement concrete around Unit-1 Spiralcase including turbine floor concreting Wed 19‐01‐22 Fri 18‐03‐22

182 1.1.2.23.27 Erection and testing of Spiralcase for Unit-2 Mon 03‐01‐22 Thu 17‐02‐22

183 1.1.2.23.28 Encasement concrete around Unit-2 Spiralcase including turbine floor concreting Fri 18‐02‐22 Mon 18‐04‐22

184 1.1.2.23.29 Generator barrel concrete for Unit-1 from EL. 101.80 upto EL. 106.30 including Generator floor slab

Tue 19‐04‐22 Fri 17‐06‐22

185 1.1.2.23.30 Generator barrel concrete for Unit-2 from EL. 101.80 upto EL. 106.30 including Generator floor slab

Wed 18‐05‐22 Mon 18‐07‐22

186 1.1.2.23.31 Generator barrel concrete for Unit-1 from EL. 106.30 upto EL. 110.80 including operating floor slab

Mon 20‐06‐22 Tue 16‐08‐22

187 1.1.2.23.32 Generator barrel concrete for Unit-2 from EL. 106.30 upto EL. 110.80 including operating floor slab

Tue 19‐07‐22 Thu 15‐09‐22

188 1.1.2.23.33 Concreting of Transformer Bay Foundation at EL. 113.0 Tue 19‐07‐22 Fri 14‐10‐22

189 1.1.2.23.34 Erection of Transformers Mon 17‐10‐22 Fri 13‐01‐23

190 1.1.2.23.35 Unit-1 Rotor / Stator erection including 2nd stage grouting of foundation pockets Fri 16‐09‐22 Tue 29‐11‐22

191 1.1.2.23.36 Unit-2 Rotor / Stator erection including 2nd stage grouting of foundation pockets Mon 17‐10‐22 Thu 29‐12‐22

192 1.1.2.23.37 Erection of MIV ‐ Unit‐1 & Unit‐2 Fri 30‐12‐22 Mon 27‐02‐23

193 1.1.2.23.38 Erection of various BOP for Unit-1 & 2 Fri 30‐12‐22 Mon 27‐02‐23

194 1.1.2.23.39 Dry testing for Unit-1 & 2 Tue 28‐02‐23 Fri 28‐04‐23

195 1.1.3 Wet testing for Unit-1 Wed 11‐10‐23 Wed 25‐10‐23

196 1.1.4 Wet testing for Unit-2 Thu 26‐10‐23 Thu 09‐11‐23

197 1.1.5 Commissioning of Unit-1 Fri 10‐11‐23 Thu 23‐11‐23

198 1.1.6 Commissioning of Unit-2 Fri 24‐11‐23 Thu 30‐11‐23

199 1.1.7 Commercial Operation Date (COD) Thu 30‐11‐23 Thu 30‐11‐23 30-11


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SALIENT FEATURES (120 MW LOWER KOPILI HYDROELECTRIC PROJECT) features, Detailed... · 6.1.10...

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