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REPORT Earthquake Commission Christchurch Earthquake Recovery Geotechnical Factual Report Woolston Appendix A8: Investigation Location Plans and Geotechnical Investigations

Christchurch Earthquake Recovery Geotechnical Factual Report Woolston Appendix A8: Investigation Location Plans and Geotechnical Investigations T&T Ref. REP-CCM-FAC Earthquake Commission December 2011

REPORT

Report prepared for: EARTHQUAKE COMMISSION

Report prepared by: Tonkin & Taylor LTD

Distribution:

EARTHQUAKE COMMISSION 1 copy

Tonkin & Taylor LTD (FILE) 1 copy

December 2011

T&T Ref: REP-CCM-FAC

Earthquake Commission Christchurch Earthquake Recovery Geotechnical Factual Report Woolston Appendix A8: Investigation Location Plans and Geotechnical Investigations


Appendix A8: Investigation Location Plans and Geotechnical Investigations

Drawing GIP-CCM-A8

Woolston

Cone penetration testing summary table

Suburb CPT ID Depth (m)

Location (mE)

Location (mN)

Ground Surface RL

Ground Water Depth (m)

Comments

Woolston CPT-WSW-31 25.46 2483854.75 5738896.06 2.61 2.40

Woolston CPT-WSW-32 7.39 2484215.67 5738945.85 2.31 1.62 Piezometer installed

Woolston CPT-WSW-33 9.71 2484195.04 5738606.79 2.56 1.80 Seismic CPT

Woolston CPT-WSW-56 8.66 2485542.08 5739960.56 2.09 0.70

A typical detail of a piezometer installation is included in this Appendix.

Machine borehole drilling summary table

Suburb BH ID Depth (m)

Location (mE)

Location (mN)

Ground Surface RL

Method Drilling Company

Woolston BH-WSW-09 20.45 2484195.08 5738606.78 2.55 HQTT Prodrill


Cone penetration tests

Project: Christchurch 2011 Earthquake - EQC Ground Investigations Page: 1 of 2 CPT-WSW-31 Test Date: 1-Jun-2011 Location: Woolston Operator: Perry

Pre-Drill: 1.2m Assumed GWL: 2.4mBGL Located By: Survey GPS

Position: 2483854.8mE 5738896.1mN 2.61mRL Coord. System: NZMG & MSL

Other Tests: Comments:

0

2

4

6

8

10

12

14

16

18

20

0 40 80 120 160 200 240 280 320 360 400

0

2

4

6

8

10

12

14

16

18

20

0 2 4 6 8 10 12 14 16 18 20

Sleeve Friction (kPa)

Dep

th(

m)

Cone Resistance (MPa)Cone Sleeve

0 1 2 3 4 5 6

0 1 2 3 4 5 6

Friction Ratio (%)

0 100 200 300

0 100 200 300

Pore Pressure (kPa)

T+T Ref: 52000.3000 Printed: 8/09/2011 4:10 p.m. Template: CPT Graph Template v0.41.xls





20

22

24

26

28

30

32

34

36

38

40

0 40 80 120 160 200 240 280 320 360 400

20

22

24

26

28

30

32

34

36

38

40

0 2 4 6 8 10 12 14 16 18 20


Dep

th(

m)


0 1 2 3 4 5 6

0 1 2 3 4 5 6

Friction Ratio (%)

0 100 200 300

0 100 200 300

Pore Pressure (kPa)






0

2

4

6

8

10

12

14

16

18

20

0 40 80 120 160 200 240 280 320 360 400

0

2

4

6

8

10

12

14

16

18

20

0 2 4 6 8 10 12 14 16 18 20


Dep

th(

m)


0 1 2 3 4 5 6

0 1 2 3 4 5 6

Friction Ratio (%)

0 100 200 300

0 100 200 300

Pore Pressure (kPa)


Project: Christchurch 2011 Earthquake - EQC Ground Investigations Page: 1 of 1 CPT-WSW-33 Test Date: 20-Oct-2011 Location: Woolston Operator: Opus


Position: 2484195mE 5738606.8mN 2.56mRL Coord. System: NZMG & MSL


0

2

4

6

8

10

12

14

16

18

20

0 40 80 120 160 200 240 280 320 360 400

0

2

4

6

8

10

12

14

16

18

20

0 2 4 6 8 10 12 14 16 18 20


Dep

th(

m)

Cone Resistance (MPa) Cone Sleeve

0 1 2 3 4 5 6

0 1 2 3 4 5 6

Friction Ratio (%)

0 100 200 300

0 100 200 300

Pore Pressure (kPa)

T+T Ref: 52000.3000 Printed: 26/10/2011 9:07 a.m. Template: CPT Graph Template v0.41.xls

Project: Christchurch 2011 Earthquake - EQC Ground Investigations Page: 1 of 1 CPT-WSW-56 Test Date: 13-Jun-2011 Location: Woolston Operator: Geotech




0

2

4

6

8

10

12

14

16

18

20

0 40 80 120 160 200 240 280 320 360 400

0

2

4

6

8

10

12

14

16

18

20

0 2 4 6 8 10 12 14 16 18 20


Dep

th(

m)


0 1 2 3 4 5 6

0 1 2 3 4 5 6

Friction Ratio (%)

0 100 200 300

0 100 200 300

Pore Pressure (kPa)



Borehole logs

HA

ND

DU

GH

QT

TS

PT

HQ

TT

SP

TH

QT

TS

PT

HAND DIG FILL(Potholed for servicescheck and backfilled.)

YALDHURSTMEMBER OF THESPRINGSTONFORMATION(ALLUVIAL)

PSD WS

3/3/4/3/3/2N=12

1/2/1/1/2/1N=5

FC

FC

1/0/0/1/2/2N=5

SP

GW

ML

SP

SP

SP

SP

FILL: Borehole drilled through pre-dug andbackfilled pothole.

Medium SAND, brown grey. Mediumdense, moist.

Silty, medium to coarse GRAVEL, grey.Loose, wet. Gravel is angular.Sandy SILT, grey. Very soft, wet, lowplasticity. Sand is coarse.2.3 to 3.0m no recovery

Silty, fine SAND with some gravel, grey.Loose, moist. Gravel is fine, angular.

Silty, fine SAND, grey. Loose, moist.

Silty, medium SAND interbedded with veryclosely spaced silt laminae, grey. Loose,moist.4.3 to 4.5m no recovery

Medium SAND with minor silt, grey. Loose,moist.

- contains trace silt

100

5387

M

W

W

M

M

M

M

MD

L

VS

L

L

L

L

Hole Location: Maunsell St &Cumnor Tce

SHEET 1 OF 5

BOREHOLE No: WSW 09

BORELOG 650494.000 BOREHOLE LOGS.GPJ 19/12/11

CA

SIN

G

TESTS

SA

MP

LES

WE

AT

HE

RIN

G

ST

RE

NG

TH

/DE

NS

ITY

CLA

SS

IFIC

AT

ION

SH

EA

R S

TR

EN

GT

H

(kP

a)

10 25 50 100

200

CO

MP

RE

SS

IVE

ST

RE

NG

TH

(MP

a)

1 5GR

AP

HIC

LO

G

CLA

SS

IFIC

AT

ION

SY

MB

OL

R.L

. (m

)2.5

2.0

1.5

1.0

0.5

0.0

-0.5

-1.0

-1.5

-2.0

DE

PT

H (

m)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

MO

IST

UR

E

CO

ND

ITIO

N

ROCK DESCRIPTION

Substance: Rock type, particle size, colour,minor components.

Defects: Type, inclination, thickness,

BOREHOLE LOG

WA

TE

R

20 50 100 roughness, filling.

50 250

1000

2000

250

DE

FE

CT

SP

AC

ING

(mm

)

5

SOIL DESCRIPTION

Soil type, minor components, plasticity orparticle size, colour.ORIGIN,

MINERAL COMPOSITION.

ENGINEERING DESCRIPTION

FLU

ID L

OS

S

ME

TH

OD

GENERIC NAME,

GEOLOGICAL

GEOLOGICAL UNIT,

CO

RE

RE

CO

VE

RY

(%

)

CO-ORDINATES

R.L.

DATUM

PROJECT: CHRISTCHURCH 2011 EARTHQUAKE LOCATION: WOOLSTON JOB No: 52000.3200

2.55 m

NZMG

DRILL TYPE: Rotary

DRILL METHOD: HQTT

HOLE STARTED: 13/6/11

HOLE FINISHED: 14/6/11

DRILLED BY: Pro-Drill

LOGGED BY: CP CHECKED: BMcDDRILL FLUID: Mud


T+

T_D

AT

AT

EM

PL

AT

E.G

DT

rth

5738606.78 mN2484195.08 mE

TONKIN & TAYLOR LTD

HQ

TT

SP

TH

QT

TS

PT

HQ

TT

SP

T


FC

3/6/6/5/4/6N=21

PSD WS

5/5/5/10/11/12N=38

9/10/11/9/11/12N=43

SP

SP

GW

G

GW

Medium SAND with trace silt, grey. Loose,moist.

6.4 to 6.5m no recovery

Silty, fine SAND, grey. Medium dense,moist.

Fine to medium GRAVEL, light grey.Dense, moist. Gravel is subrounded tosubangular.

8.0 to 9.5m no recovery. Becoming dense.

Sandy, fine to coarse GRAVEL, grey.Dense, moist. Gravel is subrounded tosubangular. Sand is medium.

Fine to medium GRAVEL, light grey.Dense, moist. Gravel is subrounded tosubangular.

9580

0

M

M

M

M

M

L

MD

D

D

D

D


SHEET 2 OF 5

BOREHOLE No: WSW 09


CA

SIN

G

TESTS

SA

MP

LES

WE

AT

HE

RIN

G

ST

RE

NG

TH

/DE

NS

ITY

CLA

SS

IFIC

AT

ION

SH

EA

R S

TR

EN

GT

H

(kP

a)

10 25 50 100

200

CO

MP

RE

SS

IVE

ST

RE

NG

TH

(MP

a)

1 5GR

AP

HIC

LO

G

CLA

SS

IFIC

AT

ION

SY

MB

OL

R.L

. (m

)-2.5

-3.0

-3.5

-4.0

-4.5

-5.0

-5.5

-6.0

-6.5

-7.0

DE

PT

H (

m)

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

MO

IST

UR

E

CO

ND

ITIO

N

ROCK DESCRIPTION



BOREHOLE LOG

WA

TE

R


50 250

1000

2000

250

DE

FE

CT

SP

AC

ING

(mm

)

10

SOIL DESCRIPTION




FLU

ID L

OS

S

ME

TH

OD

GENERIC NAME,

GEOLOGICAL

GEOLOGICAL UNIT,

CO

RE

RE

CO

VE

RY

(%

)

CO-ORDINATES

R.L.

DATUM


2.55 m

NZMG

DRILL TYPE: Rotary

DRILL METHOD: HQTT






T+

T_D

AT

AT

EM

PL

AT

E.G

DT

rth

5738606.78 mN2484195.08 mE

TONKIN & TAYLOR LTD

HQ

TT

SP

TH

QT

TS

PT

HQ

TT

SP

TH

QT

T



1/2/1/3/3/5N=12

3/4/5/8/10/11N=34

3/5/7/10/10/13N=40

FC

SP


Medium SAND, grey. Medium dense,moist.


- becoming dense

12.9 to 14.0m no recovery.

3327

3087

M MD

D


SHEET 3 OF 5

BOREHOLE No: WSW 09


CA

SIN

G

TESTS

SA

MP

LES

WE

AT

HE

RIN

G

ST

RE

NG

TH

/DE

NS

ITY

CLA

SS

IFIC

AT

ION

SH

EA

R S

TR

EN

GT

H

(kP

a)

10 25 50 100

200

CO

MP

RE

SS

IVE

ST

RE

NG

TH

(MP

a)

1 5GR

AP

HIC

LO

G

CLA

SS

IFIC

AT

ION

SY

MB

OL

R.L

. (m

)-7.5

-8.0

-8.5

-9.0

-9.5

-10.0

-10.5

-11.0

-11.5

-12.0

DE

PT

H (

m)

10.5

11.0

11.5

12.0

12.5

13.0

13.5

14.0

14.5

10.5

11.0

11.5

12.0

12.5

13.0

13.5

14.0

14.5

MO

IST

UR

E

CO

ND

ITIO

N

ROCK DESCRIPTION



BOREHOLE LOG

WA

TE

R


50 250

1000

2000

250

DE

FE

CT

SP

AC

ING

(mm

)

15

SOIL DESCRIPTION




FLU

ID L

OS

S

ME

TH

OD

GENERIC NAME,

GEOLOGICAL

GEOLOGICAL UNIT,

CO

RE

RE

CO

VE

RY

(%

)

CO-ORDINATES

R.L.

DATUM


2.55 m

NZMG

DRILL TYPE: Rotary

DRILL METHOD: HQTT






T+

T_D

AT

AT

EM

PL

AT

E.G

DT

rth

5738606.78 mN2484195.08 mE

TONKIN & TAYLOR LTD

SP

TH

QT

TS

PT

HQ

TT

SP

TH

QT

T

CHRISTCHURCHFORMATION(MARINE &ESTUARINE)

2/4/7/10/9/12N=38

FC

FC

1/3/3/3/3/4N=16

PSD HYD

1/1/1/1/5/7N=14

FC

SP

ML

ML

SP

ML

Medium SAND, grey. Dense, moist.


16.3 to 16.5 contains organic material


Sandy SILT, grey. Stiff, moist, lowplasticity. Sand is fine.

SILT, bluish grey. Firm, moist, lowplasticity.

Silty, fine SAND, bluish grey. Mediumdense, moist.

Sandy SILT, bluish grey. Stiff, moist, nonplastic, dilatant. Sand is fine.

7380

47

M

M

M

M

M

D

St

F

MD

St


SHEET 4 OF 5

BOREHOLE No: WSW 09


CA

SIN

G

TESTS

SA

MP

LES

WE

AT

HE

RIN

G

ST

RE

NG

TH

/DE

NS

ITY

CLA

SS

IFIC

AT

ION

SH

EA

R S

TR

EN

GT

H

(kP

a)

10 25 50 100

200

CO

MP

RE

SS

IVE

ST

RE

NG

TH

(MP

a)

1 5GR

AP

HIC

LO

G

CLA

SS

IFIC

AT

ION

SY

MB

OL

R.L

. (m

)-12.5

-13.0

-13.5

-14.0

-14.5

-15.0

-15.5

-16.0

-16.5

-17.0

DE

PT

H (

m)

15.5

16.0

16.5

17.0

17.5

18.0

18.5

19.0

19.5

15.5

16.0

16.5

17.0

17.5

18.0

18.5

19.0

19.5

MO

IST

UR

E

CO

ND

ITIO

N

ROCK DESCRIPTION



BOREHOLE LOG

WA

TE

R


50 250

1000

2000

250

DE

FE

CT

SP

AC

ING

(mm

)

20

SOIL DESCRIPTION




FLU

ID L

OS

S

ME

TH

OD

GENERIC NAME,

GEOLOGICAL

GEOLOGICAL UNIT,

CO

RE

RE

CO

VE

RY

(%

)

CO-ORDINATES

R.L.

DATUM


2.55 m

NZMG

DRILL TYPE: Rotary

DRILL METHOD: HQTT






T+

T_D

AT

AT

EM

PL

AT

E.G

DT

rth

5738606.78 mN2484195.08 mE

TONKIN & TAYLOR LTD

SP

T

CHRISTCHURCHFORMATION(MARINE &ESTUARINE)

FC

0/0/0/0/0/0N=0

ML Sandy SILT, bluish grey. Very soft, moist,non plastic, dilatant. Sand is fine.

End of borehole at 20.45mbgl. Nopiezometer installed - backfilled with grout.

M VS


SHEET 5 OF 5

BOREHOLE No: WSW 09


CA

SIN

G

TESTS

SA

MP

LES

WE

AT

HE

RIN

G

ST

RE

NG

TH

/DE

NS

ITY

CLA

SS

IFIC

AT

ION

SH

EA

R S

TR

EN

GT

H

(kP

a)

10 25 50 100

200

CO

MP

RE

SS

IVE

ST

RE

NG

TH

(MP

a)

1 5GR

AP

HIC

LO

G

CLA

SS

IFIC

AT

ION

SY

MB

OL

R.L

. (m

)-17.5

-18.0

-18.5

-19.0

-19.5

-20.0

-20.5

-21.0

-21.5

-22.0

DE

PT

H (

m)

20.5

21.0

21.5

22.0

22.5

23.0

23.5

24.0

24.5

20.5

21.0

21.5

22.0

22.5

23.0

23.5

24.0

24.5

MO

IST

UR

E

CO

ND

ITIO

N

ROCK DESCRIPTION



BOREHOLE LOG

WA

TE

R


50 250

1000

2000

250

DE

FE

CT

SP

AC

ING

(mm

)

25

SOIL DESCRIPTION




FLU

ID L

OS

S

ME

TH

OD

GENERIC NAME,

GEOLOGICAL

GEOLOGICAL UNIT,

CO

RE

RE

CO

VE

RY

(%

)

CO-ORDINATES

R.L.

DATUM


2.55 m

NZMG

DRILL TYPE: Rotary

DRILL METHOD: HQTT






T+

T_D

AT

AT

EM

PL

AT

E.G

DT

rth

5738606.78 mN2484195.08 mE

TONKIN & TAYLOR LTD


Machine borehole core photographs

BH-WSW-09

0.00 - 4.10m

4.10 - 7.50m

7.50 - 16.20m

16.20 - 20.45m


Laboratory test results

Summary Sheet

a) Fines content

Borehole ID Depth of Sample

BH-WSW-09 3.60

BH-WSW-09 4.20

BH-WSW-09 5.00

BH-WSW-09 14.50

BH-WSW-09 16.00

BH-WSW-09 17.00

BH-WSW-09 17.50

BH-WSW-09 19.00

BH-WSW-09 20.00

b) Particle size distribution

Borehole ID Depth of Sample

BH-WSW-09 0.80

BH-WSW-09 7.00

BH-WSW-09 18.50

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