Legacy Way Project - GHD
Transcript of Legacy Way Project - GHD
![Page 1: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/1.jpg)
PM-OP-TE-0015
Legacy Way ProjectPresentation to IoM3 – Hong Kong Branch - 27 March 2013
![Page 2: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/2.jpg)
PM-OP-TE-0015
Outline• Project overview• Geology and geotechnical issues• Tunnelling• SFRC segments • Cross passages • Progress to date• Concluding remarks• Q & A
![Page 3: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/3.jpg)
PM-OP-TE-0015
Outline• Project overview• Geology and geotechnical issues• Tunnelling• SFRC segments • Cross passages • Progress to date• Concluding remarks• Q & A
![Page 4: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/4.jpg)
PM-OP-TE-0015
Contract between TRANSCITY and the three designers to deliver the D&C design, Design Certification and As-Constructed Certification
![Page 5: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/5.jpg)
PM-OP-TE-0015
Project Overview
• AUD $1.8bn D & C contract let in September 2010, to be complete by 2015
• two-lane TBM PCC segment lined rock tunnels length = 4.3kmeach
• 36No. XPs every 120m, 4No. substations and sump/pump station.• grades at 3% except for the Eastern end where the grade rises to
5%.
![Page 6: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/6.jpg)
PM-OP-TE-0015
• TBM Annabell• TBM Joyce
Double shield rock TBMs
![Page 7: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/7.jpg)
PM-OP-TE-0015
Outline• Project overview• Geology and geotechnical• Tunnelling• SFRC segments• Cross passages • Progress to date• Concluding remarks• Q & A
![Page 8: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/8.jpg)
PM-OP-TE-0015
Bunya Phyllite Neranleigh-Fernvale Beds
![Page 9: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/9.jpg)
PM-OP-TE-0015
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
20 30 40 50 60 70 80 90 100
foliation angle (deg)
UC
S_es
t (M
Pa)
![Page 10: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/10.jpg)
PM-OP-TE-0015
BPY phyllite-hornfels-quartzite (FR)
0.00
5.00
10.00
15.00
20.00
25.00
30.00
0 - 2
2 - 4
4 - 6
6 - 8
8 - 10
10 - 1
212
- 14
14 - 1
616
- 18
18 - 2
020
- 22
22 - 2
424
- 26
26 - 2
828
- 30
30 - 3
2
Is50 MPa
Freq
uenc
y %
e.g. NFBGreywacke
UCS_ave(MPa)
UCS_k(MPa)
FR 5.35 4.28
SW 2.05 1.64
DW 1.83 1.46
0
2
4
6
8
10
12
14
1 2 3 4 5 6 7 8 9 10 11 12 13 14
depth class (m)
frequ
ency
![Page 11: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/11.jpg)
PM-OP-TE-0015
Weathering
![Page 12: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/12.jpg)
PM-OP-TE-0015
Rock structure
![Page 13: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/13.jpg)
PM-OP-TE-0015
![Page 14: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/14.jpg)
PM-OP-TE-0015
In situ stress
![Page 15: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/15.jpg)
PM-OP-TE-0015
Outline• Project overview• Geology and geotechnical issues• Tunnelling• SFRC segments• Cross passages • Progress to date• Concluding remarks• Q & A
![Page 16: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/16.jpg)
PM-OP-TE-0015
![Page 17: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/17.jpg)
PM-OP-TE-0015
Verti
cal d
ispl
. (m
m)
![Page 18: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/18.jpg)
PM-OP-TE-0015
![Page 19: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/19.jpg)
PM-OP-TE-0015
![Page 20: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/20.jpg)
PM-OP-TE-0015
Trackless wagon transport
![Page 21: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/21.jpg)
PM-OP-TE-0015
Outline• Project overview• Geology and geotechnical issues• Tunnelling• SFRC segments • Cross passages • Progress to date• Concluding remarks• Q & A
![Page 22: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/22.jpg)
PM-OP-TE-0015
SFRC Segments
• 12.0 m Outside diameter• 11.3m internal diameter• Ring internal dia. / thickness = 32 • Segment span / thickness = 12• 8 + 1 universal ring• 2.0 m wide
![Page 23: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/23.jpg)
PM-OP-TE-0015
![Page 24: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/24.jpg)
PM-OP-TE-0015
Segment quality control
![Page 25: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/25.jpg)
PM-OP-TE-0015
Outline• Project overview• Geology and geotechnical issues• Tunnelling• SFRC segments • Cross passages • Progress to date• Concluding remarks• Q & A
![Page 26: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/26.jpg)
PM-OP-TE-0015
Cross Passages
![Page 27: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/27.jpg)
PM-OP-TE-0015
Substation openings
![Page 28: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/28.jpg)
PM-OP-TE-0015
Outline• Project overview• Geology and geotechnical issues• The tunnelling process• SFRC segment design • Cross passages • Progress to date• Concluding remarks• Q & A
![Page 29: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/29.jpg)
PM-OP-TE-0015
Tunnelling progress
• TBMs Annabell and Joyce are expected to breakthrough in the next 2 to 3 months
• Both TBMs at approximately ch.3km – Joyce approx. 100m in advance of Annabell
![Page 30: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/30.jpg)
PM-OP-TE-0015
![Page 31: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/31.jpg)
PM-OP-TE-0015
Spoil disposal
![Page 32: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/32.jpg)
PM-OP-TE-0015
Mt Coot-thaQuarry
![Page 33: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/33.jpg)
PM-OP-TE-0015
Outline• Project overview• Geology and geotechnical issues• The tunnelling process• SFRC segment design • Cross passages • Progress to date• Concluding remarks• Q & A
![Page 34: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/34.jpg)
PM-OP-TE-0015
Concluding remarksKey points to high advance rates to date:
• Good geotechnical understanding and probabilistic assessment of ground risk
• Good stand-up time, low water inflows - double-shield can realise full potential
• Staggered grouting & innovative design including circumferential joint dowels
• High segment production rate (rebar fixing minimised)• Minimising steel in segments – 350mm SFRC can be safely
handled• Effective high-volume spoil removal system• Trackless materials transport in the tunnels• Frame-less XP openings minimise obstruction
![Page 35: Legacy Way Project - GHD](https://reader030.fdocuments.in/reader030/viewer/2022040317/6247e64d576eae112c28d1f2/html5/thumbnails/35.jpg)
PM-OP-TE-0015