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Technical Paper on Chennai Metro Project (Mr Klaus Muenz and Nandan Kumar)
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Transcript of Technical Paper on Chennai Metro Project (Mr Klaus Muenz and Nandan Kumar)
INTERNATIONAL SEMINAR ON
MASS RAPID TRANSIT SYSTEM(MRTS)( )4th‐5th November 2014
REVIEW AND ASSESSMENT OF CHALLENGES REVIEW AND ASSESSMENT OF CHALLENGES G CO S C O O C A G CO S C O O C A DURING CONSTRUCTION OF CHENNAI DURING CONSTRUCTION OF CHENNAI
METRO METRO
CONTENTCONTENT
PROJECT DETAILS
PROJECT DESCRIPTION
GEOLOGICAL AND GEOTECHNICAL OVERVIEW
TUNNELLING PERFORMANCE (TBM ADVANCE/EXCAVATION)TUNNELLING PERFORMANCE (TBM ADVANCE/EXCAVATION)
TUNNELING THROUGH STATION
TUNNEL – STATION INTERFACE
CROSS PASSAGE SOIL TREATMENT
DESIGN AND CONSTRUCTION OF UNDERGROUND AND ASSOCIATED TUNNELS FOR UAA‐01 & UAA‐05 AND ASSOCIATED TUNNELS FOR UAA 01 & UAA 05
OF CHENNAI METRO
CLIENT :CHENNAI METRO RAIL LTD
GENERAL CONSULTANT :EMBYEGENERAL CONSULTANT :EMBYE
CONTRACTOR :TRANSTONNELSTORY‐AFCONS JV
DESIGNER :PARSONS BRINCKERHOFF
SOURCE OF FUND :FUNDED BY JICA
Total Twin Tunnel Length : 17.5 KM
UAA UAA 0101UAA UAA ‐‐ 0505
UAA UAA ‐‐ 0101
Afcons Project
SITE LAYOUT OF THE PROJECT
AA 01UAA 01
UAA 05UAA 05
EPBM EPBM –– Main BodyMain Body
20# shove rams
Transportation of TBM From Port to Site
View of EOT at Washermanpet
Tail Skin Lowering for TBM 718 at Shenoy Nagar Station
Front & middle Shields ready for lowering into Shaft
TBM AssemblyTBM Assembly
Trial of Muck Tilting Divice
VIEW OF 1ST TUNNEL ‐ SHENOY NAGAR STATION
View of Twin Tunnel
Casting shed & View of Commissioned Moulds
Segment casting at casting Yard Segment casting at casting Yard
View of Segment stacking
Cutter Head / Cutting ToolsCutter Head / Cutting Tools
Sample TBM Data RecordSample TBM Data Record
Types of reports/records
•TBM Steering & alignmentTBM Steering & alignment
•TBM Excavation volume control
•Tunnel grouting records
•Ring survey & orientation recordRing survey & orientation record
•Ring build record (steps, cracks,
damage etc)
•TBM Operational Data recordp
Typical Soil Profile Typical Soil Profile ‐‐ Packages 05Packages 05
Typical Mixed Soil Profile Typical Mixed Soil Profile ‐‐ Packages 01Packages 01
GroundGround LevelLevel :: ++22..855855
RoofRoof TopTop levellevel :: --00..420420
ConcourseConcourse LevelLevel :: --66..420420
BaseBase SlabSlab LevelLevel :: --1414..135135
DD--WallWall TipTip levellevel :: --2424..600600
Mixed GroundMixed Ground
Typical Rock Soil Profile Typical Rock Soil Profile ‐‐ Packages 01Packages 01
Soil ProfileSoil Profile‐‐Mannadi StationMannadi Station
Project UAA 01
Soil ProfileSoil Profile‐‐ Chennai Central StationChennai Central Station
Project UAA 01
Core DetailsCore Details
Surface Constraints
Saint Andrew’s ChurchSHIFTING OF MONUMENT AT RIPPON
BUILDING AREA
High Court Mannadi
Surface Constraint Chennai Central
SHC Shaft
Surface Constraint Chennai Central
Surface Constraint ‐Egmore
Surface Constraint - Railway tracks on the stretch High Court –Chennai Central and geological Profile
Surface Constrain - Railway tracks on the stretch Chennai Central ‐Mayday Park Tunnel
View of Locomotive ‐Mayday ParkView of Locomotive Mayday Park
Tunnelling beneath Coovam River
Under Coovam River
100%
TYPICAL GEOLOGICAL PROFILE VARIATION
60%
80%
100%
age
W1 W2 W3 W4Expected
20%
40%
Perce
nt
0%
4842
.0133
4847
4862
.9
4880
4891
4903
4910.4
4915
4923
4934
4940
4951
4956
4967
4977
4992
Chainage
60%
80%
100%
entage
Actual Profile
0%
20%
40%
3 7 9 0 1 3 4 5 3 4 0 1 6 7 7 2
Perce
4842
.0133
4847
4862
.9
4880
4891
4903
4910.4
4915
4923
4934
4940
4951
4956
4967
4977
4992
Chainage W1‐Fresh Rock W2‐Slightly weathered Rock
W3‐M Weathered RockW4‐ Highly Weathered Rock
Geological Variation Results:Cutter Consumption & Frequency of Intervention
TBM retrieval in wet condition
CHENNAI CENTRAL (Overlapping of Two Corridor)(Overlapping of Two Corridor)
Retrieval Shaft at SCC ‐Mayday Park Tunnel
Obstacles during Tunnel OperationObstacles during Tunnel Operation
Ground Level
CL
Red Zone O
raZon
Gr
Zone
L
TUNNEL A
ange ne
reen ZoneGreen Z
Orang
e Zo
ne
TUNNEL BA B
1.0 mt 1.0 mt
Bore well influence 1mt from Extrados of TunnelBore well influence 1mt from Extrados of TunnelBore well influence 1mt from Extrados of Tunnel Bore well influence 1mt from Extrados of Tunnel SegmentSegment
Obstacles during Tunnel OperationObstacles during Tunnel Operation
UAA 01
NO. OF EXISTING WELLS IN DIFFERENT ZONES: UAA01
UAA 01
Project
RED ZONE (11.355 m. f T l
ORANGE ZONE (5.15 m. from RED
GREEN ZONE ( 4.5 m. from
TOTAL R + O + G
Projectfrom Tunnel
CL)
(5. 5 m. from RZONE)
( 4.5 m. fromORANGE ZONE)
G
Package 01 304 98 90 492g
Package 0561 24 60 145
Total 365 122 150 637Total 365 122 150 637
BUILDING CONDITION SURVEY
BUILDING CONDITION SURVEY
TUNNELLING PERFORMANCETUNNELLING PERFORMANCEThe TBMS are normally operated on a 24 hr basis, working 2 shifts per day.p yThe following main results have been achieved:
Average Daily Production:.12 ..Rings =16.8 mBest Day(09/02/2013): 39rings=54 6 mBest Day(09/02/2013): 39rings=54.6 mBest week(04/02/2013 to 09/02/2013): 139 rings=182 mBest Month ( Oct 2013): 525 rings= 735 m
We have achieved 39 Rings Boring in a day first time in the World
Considering that all the 5 TBMs have been operated in a very sensitive urban environment, almost always in closed mode, these results can be regarded as very positive and above the usual standard.
Heave pressure verification
3 50
4.00
4.50
5.00
2.00
2.50
3.00
3.50
ress
ures
(bar
)
0.50
1.00
1.50
Pr
Cohesive material0.00
0+22
00+
260
0+30
00+
340
0+38
00+
420
0+46
00+
500
0+54
00+
580
0+62
00+
660
0+70
00+
740
0+78
00+
820
0+86
00+
900
0+94
00+
980
1+02
01+
060
1+10
01+
140
1+18
01+
220
1+26
01+
300
1+34
01+
380
1+42
01+
460
1+50
01+
540
1+58
0
CHAINAGE
Cohesive material
Heave pressure (by Jancsez th.) Recommended Max. Pressure
Recommended EPB pressure and G t I j ti P Grout Injection Pressure
3.00
2.00
2.50
ar)
1 00
1.50
Pres
sure
s (b
0.50
1.00
0.00
1+58
0
1+62
0
1+66
0
1+70
0
1+74
0
1+78
0
1+82
0
1+86
0
1+90
0
1+94
0
1+98
0
2+02
0
2+06
0
2+10
0
2+14
0
2+18
0
2+22
0
2+26
0
2+30
0
2+34
0
2+38
0
2+42
0
2+46
0
2+50
0
CHAINAGE
Recommended pressure Min.pressure Max.pressure Grout injection system
Earth Pressure Monitoring
1
1.5
2
2.5
3
Pressur
e (b
ar)
0
0.5
1
0 200 400 600 800 1000 1200 1400 1600 1800 2000
Earth P
Ring No. Mannadi Station D'W ll C tti
High Court S i AD'Wall Cutting Station Area
2.5
3
3.5
ure (b
ar)
0.5
1
1.5
2
Earth Pressu
00 200 400 600 800 1000 1200 1400 1600 1800 2000
Ring No.
Typical Machining Parameters monitoring
20000
25000
30000
orce
Thrust Force(kN)
22.53
3.5
M
Cutting wheel Rotation (rpm)
0
5000
10000
15000
0 500 1000 1500 2000
Thru
st Fo
00.51
1.52
0 500 1000 1500 2000
RPM
0 500 1000 1500 2000
Ring No.
0 500 1000 1500 2000
Ring No.
Torque(MN.m) Advance Speed (mm/Min)
2
2.5
3
3.5
4
que
30
40
50
60
eed(
)mm/M
in.
0
0.5
1
1.5
2
Torq
0
10
20
0 500 1000 1500 2000
Adv
ance Spe
0 500 1000 1500 2000
Ring No. Ring No.
Operation steps in Mechanized Tunneling Operation steps in Mechanized Tunneling
Making Launching ShaftA bl f TBM i i Sh fAssembly of TBM Initial DriveMuck Out
Receiving ShaftTunnel Break through Dissemble TBM
BoringAssembly of LiningGroutingSegment Lining
Close of Launching shaft upon Completion
Retrieval of TBM to GroundtClose of receiving shaft
Grouting
p p
Segment yardCasting of Segment
Type of TBMType of TBMEPBM‐Mixed Ground Type EPB‐Soft Ground Type
UAA 01Washermanpet to Chennai CentralM f t H k ht
UAA 05Shenoy Nagar to Thirumangalam
Manufacture‐Herrenknecht Manufacture‐Herrenknecht
UAA 01May day Park to Chennai
EPB‐Rock/Mixed Face
May day Park to Chennai CentralManufacture‐Robbins
TBM ConfinementTBM Confinement
Breaking Out Through Confinement
UAA 01Mining Through D Th h
Interface Tunnel Interface Tunnel ‐‐ StationStation
Mining Through Station Trag Through
UAA 01Mining Through Drag Through
Break In Break InBreak Out Break Out
Break In
UAA 05
Break Out
Mining Through h h reak
hrou
gh
Mining Through Drag Through Drag Through Br Th
Break InBreak InBreak Out Break InBreak Out
TBM 717 Break In – Anna Nagar TBM Break In Shenoy Nagar StationTBM 717 Break In Anna Nagar Tower
TBM Break In‐ Shenoy Nagar Station
View of 1st Tunnel & TBM 718 ‐ Shenoy Nagar Station
Mining Through StationMining Through Station
Plan
Elevation
TBM Drag through
TBM TBM Break throughBreak through717
718711
711 710717710 711 710717710
Tunnel Boring Machine SpecificationTunnel Boring Machine Specification
TBM’s Cost of each TBM & backup equipment 33.5CrTBM total weight 290 TExcavation diameter 6.6 mExcavation diameter 6.6 mOverall length 9.7 mElectrical power 940 kW Left & right rotation speed Max 4.57 rpmRam advance speed Max. 80 mm/minRam jacks 32 #Ram jacks 32 #Total advance thrust force 42000 KNEarth pressure sensors 6 #
TreatmentTreatmentCross Passage Soil Cross Passage Soil TreatmentTreatment