2.1
The proposed Hong Kong - Zhuhai - Macao Bridge Hong Kong Link Road
(HKLR) is 12km long connecting the Hong Kong-Zhuhai-Macao Bridge (HZMB) at the
HKSAR Boundary with the Hong Kong Boundary Crossing Facilities (HKBCF) situated
at the north eastern waters of the Hong Kong International Airport, opening a
new and direct connection route between Hong Kong, Macao and the Western Pearl
River Delta.
2.2
The HKLR comprises a 9.4km long viaduct section from the HKSAR boundary
to Scenic Hill on the Airport Island; a 1km tunnel section to the reclamation
formed along the east coast of the Airport Island and a 1.6km long at-grade
road section on the reclamation connecting to the HKBCF. The tunnel section of
HKLR will pass under Scenic Hill, Airport Road and Airport Railway to minimize
the environmental and visual impacts to Tung Chung residents.
2.3
An application (No ESB-110/2003) for an Environmental Impact Assessment
(EIA) Study Brief under Section 5(1) of the Environmental Impact Assessment
Ordinance (EIAO) was submitted by Highways Department (the Project Proponent)
on 8 October 2003 with a Project Profile (No. No. PP-201/2003) for the Hong
Kong - Zhuhai - Macao Bridge Hong Kong Section and North Lantau Highway
Connection. The Hong Kong - Zhuhai - Macao Bridge Hong Kong Section and North
Lantau Highway Connection has subsequently been renamed as HKLR. EPD issued an EIA Study Brief (No:
ESB-110/2003) in November 2003 to the Project Proponent to carry out an EIA
study.
2.4
An EIA Study (Reg. No. AEIAR-144/2009) has been undertaken to provide
information on nature and extent of environmental impacts arising from the
construction and operation of HKLR. The Environmental Permit was issued on 4
November 2009 (Permit No. EP-352/2009). Pursuant to Section 13 of the EIAO, the
Director of Environmental Protection amends the Environmental Permit (No. EP-352/2009)
based on the Application No. VEP-339/2011 and the environmental Permit (Permit
No. EP-352/2009/A) was issued on 9 November 2011 for HKLR to the Highways
Department as the Permit Holder. Subsequently, the Director of Environmental
Protection amends the Environmental Permits (No. EP-352/2009/A, EP-352/2009/B, EP-352/2009/C)
based on the Application No. VEP-409/2013, VEP-411/2013 and VEP-459/2014
respectively. The environmental Permit (Permit No. EP-352/2009/D) was then issued
on 22 December 2014.
2.5
Figure 1a-d shows the layout of the Contract
and the scope of the Contract works comprises the following major items:
·
a dual 3-lane carriageway in the form of
viaduct from the HKSAR boundary (connecting with the HZMB Main Bridge) to the
Scenic Hill (connecting with the tunnel under separate Contract No.
HY/2011/03), of approximately 9.4km in length with a hard shoulder for each
bound of carriageway and a utilities trough on the outer edge of each bound of
viaducts;
·
a grade-separated turnaround facility located near San Shek Wan, composed of sliproads
in the form of viaduct with single-lane carriageway bifurcated from the HKLR
mainline with an elevated junction above the mainline;
·
provision of ancillary facilities including, but not limited to,
meteorological enhancement measures including the provisioning of anemometers
and modification of the wind profiler station at hillside of Sha Lo Wan, provisioning of a compensatory marine radar,
and provisioning of security systems; and
·
associated civil, structural, geotechnical, marine, environmental
protection, landscaping, drainage and highways electrical and mechanical
(E&M) works, street lightings, traffic aids and sign gantries, marine
navigational aids, ship impact protection system, water mains and fire hydrants,
lightning protection system, structural health monitoring and maintenance
management system (SHM&MMS), supervisory control and data acquisition
(SCADA) system, as well as operation and maintenance provisions of viaducts,
provisioning of facilities for installation of traffic control and surveillance
system (TCSS), provisioning of facilities for installation of telecommunication
cables/equipments and reprovisioning
works of affected existing facilities/utilities.
2.6
Different parties with different levels of involvement in the Contract
organization include:
Supervising Officer’s Representative (SOR)
– Ove Arup & Partners Hong Kong Limited (ARUP)
Contractor –Dragages
-China Harbour-VSL JV (DCVJV)
Environmental Team (ET) – Cinotech Consultants Ltd. (Cinotech)
2.7
The proposed project organization and lines of communication with
respect to the on-site environmental management structure are shown in Figure 2. The key personnel contact
names and numbers are summarized in Table
2.1.
Table 2.1 Key
Contacts of the Contract
Party |
Position |
Name |
Phone
No. |
Fax
No. |
SOR (ARUP) |
CRE |
Mr. Michael Chan |
3767 5803 |
3767 5922 |
Mr. Colin Meadows |
3767 5801 |
|||
ENPO/IEC (Environ) |
Environmental Project Office Leader |
Mr. Y. H Hui |
3465 2888 |
3465 2899 |
Independent Environmental Checker |
Mr. Antony Wong |
3465 2888 |
3465 2899 |
|
Contractor
(DCVJV) |
Deputy Project Director |
Mr. W.K Poon |
3121 6638 |
3121 6688 |
Environmental Officer |
Mr. CHU Chung Sing |
3121 6672 |
||
24-hour Hotline |
-- |
6898 6161 |
-- |
|
ET (Cinotech) |
Environmental Team Leader |
Dr. Priscilla Choy |
2151 2089 |
3107 1388 |
2.8
ENVIRON Hong Kong Ltd. (Environ) is employed by the Highways Department
as the Independent Environmental Checker (IEC) and Environmental Project Office
(ENPO) for the Project.
2.9
A copy of Contractor’s
construction programme is provided in Appendix A.
Summary of Construction Works Undertaken During Reporting Period
2.10
The major site
activities undertaken in the reporting period included:
March 2015:
Land
Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) The last pile for land viaduct was concreted in this reporting
period.
(b) Total 169 pours for column were completed with 7 pours in this reporting
period; 61 columns were completed to top level (30 gridlines - P85 to P114). Land viaduct column completed.
(c) P81R&L excavation works and
waling & struts installation work are in progress.
(d) Sewage diversion at P82 is in
progress.
(e) P82R pre-bored sheet pile were
completed, P82L pre-bored sheet pile in progress.
(f) P83R pile cap excavation work and
waling & struts installation is in progress.
(g) Portal Works:
Pier Location |
Progress |
P84 |
Formation work is in progress,
steel bracket system to be erected; |
P87 |
Erection of steel girders and
cross beams is in progress; |
P88 |
Erection of vertical formwork
and kickers is in progress; |
P93 |
Steel fixing for portal is in
progress; |
P94 |
Portal was concreted on 24
March 2015; |
P95 |
Portal was concreted on 13
March 2015, removal of vertical formwork is in progress; |
P96 |
Removal of falsework
is in progress; |
P98 |
Removal of steel bracket
system is in progress; |
P99 |
Removal of falsework
is in progress; |
P100 |
Removal of falsework
was completed; |
P101 |
Removal of falsework
was completed; |
(h) Construction of drainage work
near P115 Abutment was completed, adjusting manhole covers is in progress.
(i) Construction of temporary
foundations for P114 segment temporary supports at R & C Lines were
completed, pile caps construction at L-Line is in progress.
Marine Viaduct (P0 to P80)
RCD Method
(except P68):
(a) Piling jackets were dismantled at D18 and
P26.
(b) Pile
excavations and casing installation are in progress at P69. 4 marine piles using RCD method were concreted
in the reporting period.
(c) Inter-face
coring tests were carried out at P5, P6, P10, P11
& P26.
(d) No Full depth coring test was carried.
(e) Sonic tests were carried out at P5, P6, P10,
P11 & P69.
(f) Grouting works were carried out at P26.
Progress at
P68
(a) Temporary platform
formation is on-going (about 16,000T of grade 150 fill placed and 2,000T of
rock armour).
(b) Jacket was installed on
RHS and casing driven.
(c) Logistic platform was
completed.
Disposal from Marine Works
(a)
The disposals in this reporting
period are shown in below table.
Disposal Location |
No of Trip |
Type of Materials |
TM38 |
0 |
Inert
Materials |
TMCLK |
0 |
Inert
Materials |
HK
Open Sea Mud Pits |
1 |
Types
II Marine Mud |
Cross
Boundary Disposal |
5 |
Type I
Marine Mud |
Pilecap Construction:
(a) 8 precast cap shells were installed P1, P12,
P54 & P58.
(b) Stage 1 concreting was completed
at P12, P17, P22 & P23.
(c) Stage 1 works is in progress at P1, P12,
P17, P22 & P23.
(d) Stage 2
concreting was completed at P3, P4, P17R, P22 &
P25.
(e) Stage 2 works is in progress at P3, P4, P17,
P22, P23 & P25.
(f) Kingpost
installation and associated steel welding works for precast shell installation
are in progress at P7, P12, P13, P15 & P54.
(g) Concrete trimming and advanced trimming
(inside casing) works were carried out at P2, P7, P15, P19-F1 &F2, P22,
P55, P79 & P80.
(h)
Submerged pilecap works with cofferdam:
Pier Location |
Side |
Progress |
P70 |
L |
Concreting works of pile cap
completed on 13-Jan-15 |
R |
Concreting works of pile cap completed on 5-Jan-15 |
|
P71 |
L |
Concreting works of pile cap completed on 6-Oct-14 |
R |
Concreting works of pile cap completed on 18-Dec-14 |
|
P72 |
L |
Concreting works of pile cap completed on 10-Mar-15 |
R |
Concreting works of pile cap completed on 31-Jan-15 |
|
P73 |
L |
Concreting works of pile cap completed on 4-Dec-14 |
R |
Concreting works of pile cap completed on 3-Jan-15 |
|
P74 |
L |
Concreting works of plug completed on 2-Mar-15; Trimming of pile head concrete is in progress |
R |
Excavation works is in progress |
|
P75 |
L |
Rock excavation is in progress |
R |
Rock excavation is in progress |
|
P76 |
L |
Trimming of pile head concrete is in progress |
R |
Concreting works of plug completed on 16-Mar-15; Cleaning works before blinding layer is in progress. |
|
P77 |
L |
Concreting works of pile cap completed on 24-Mar-15 |
R |
Steel Fixing works of pile cap is in progress |
|
P78 |
L |
Concreting works of pile cap completed on 24-Jan-15 |
R |
Concreting works of pile cap completed on 30-Jan-15 |
In-situ Column Construction
(a) 1st lift works is in progress at P16, P21, P27, P28, P29,
P30, P31, P53, P59 & P70.
(b) 1st lift concrete was poured at P27, P28, P29, P30, P31, P53,
P59 and P70.
(c) 2nd lift works and poured at P53.
(d) Pier head works is in progress at P50, P61 & P62.
(e) Pier head concreting was poured at P50, P61 & P62.
Precast Column Erection
(a) P29, P30 & P32 - Base units installed.
(b) P32 - P44 All precast units now installed.
(c) P43 - Vertical nailing tendons stressed.
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P18 |
L |
To be started in April 2015 |
R |
To be started in April 2015 |
|
P19 |
L |
Completed 4th and 5th lift in progress |
R |
Completed 3rd & 4th lift and started for 5th lift |
|
P20 |
L |
All cast in March 2015, total 7th lift |
R |
All cast in March 2015, total 7th lift |
|
P71 |
L |
All cast in February 2015, total 3 lifts (including pierhead) |
R |
All cast in March 2015, total 3 lifts (including pierhead) |
|
P72 |
L |
To be started in April 2015 |
R |
To be started in April 2015 |
|
P73 |
L |
Completed 1st lift and 2nd lift in
progress |
R |
Completed 1st lift and 2nd lift in
progress |
Marine Portal
(a) Steel fixing of portal at P52 is in progress. Bearing installation and faleswork of portal at P60 were completed and soffit
formwork is in progress.
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Lifting
Frames 1 (LF1) |
Assembly of the first set of
LF1 is on-going at WA4; Steelwork for the 2nd
set of Lifting Frames is under fabrication with some deliveries commenced. |
Lifting
Frames 3 (LF3) |
Fabrication of LF3 in China
has commenced. Some major components have been completed, and some deliveries
have been commenced. Assembly of
the first 4 sets of LF3 is targeted to be commenced by mid-April at WA4. |
Launching
Gantry 1 (LG1) |
Segment erection at P110, P111
& P112R&C completed. Gantry has been commissioned
for launching and launched to P113 & P114 is completed |
Launching
Gantry 2 (LG2) |
Load test and commissioning of
the first part have been completed. |
(b)
Segment erection:
-
A cumulative total of 140 segments have been erected
Type |
Location of Segments erected in this reporting
period |
Number of Segments erected in this reporting period |
Cumulative No. of Segments erected (up to 28th of each month) |
LG1* |
P110
& P111 |
16 |
112 |
LG2 |
P47 |
4 |
4 |
SOP |
P65 |
4 |
24 |
Precast Segment
(a)
Segment Casting:
Item |
Number in this reporting period |
Cumulative No. of Precast Segment Completed (up to 28th of each month) |
Segment
Cast |
41 |
1850 |
(b)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134 |
A2 |
228 |
Precast Concrete Shell Casting
(a) Summary
of precast shell cast in the precast yard:
Type of Shell |
Number of Precast Shell Cast in this reporting
period |
Cumulative No. of Precast Shell Completed (up to 28th of each month) |
CP1 |
6 |
80 |
CP2 |
Completed |
12 |
CP3 |
1 |
8 |
CP4 |
Completed |
8 |
CP5 |
Completed |
6 |
CP6 |
1 |
4 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All
the 5 moulds are in service for precast production.
- Totally 25
precast elements (6 piers with 3m high, 12 piers with 6m high, 4 monolithic pier
heads and 3 pier heads with bearing support) were cast in this reporting period.
- Cumulatively
162 precast elements have been produced.
Delivery for Precast Concrete Elements (by barge)
(a)
Precast Deck Segments:
-
Number of additional barges engaged in this period:
6
-
Cumulative number of barges: 11 (2 barges allocated
for long span storage)
-
Number of Deck Segment deliveries in this period: 7
trips
-
Cumulative number of Deck Segment deliveries: 43
trips
Segment Types |
Segment Delivered in this reporting period |
Cumulative No. of Precast Segment Delivered (up to 28th of each month) |
A |
12 |
40 |
B |
0 |
0 |
C |
0 |
0 |
D |
0 |
0 |
E |
22 |
164 |
(b)
Precast column units:
-
Number of additional barges engaged in this period:
0
-
Cumulative number of barges: 1
-
Number of column unit deliveries in this period: 5
trips
-
Cumulative number of column unit deliveries: 19
trips
Unit Types |
Number of units delivered in this reporting period |
Cumulative No. of Precast Column Delivered (up to 28th of month) |
3m |
4 |
16 |
6m |
8 |
34 |
PH1 |
8 |
18 |
PH2 |
0 |
8 |
(c)
Temporary storage of long span segments:
-
First barge loaded with four long span segments on
26 March 15.
-
Preparation of 2nd Long-Span storage
barge on going.
April 2015:
Land
Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) P81L pile cap excavation works
was completed and reinforced concrete works is in progress. P81R pile cap
excavation works and waling & struts installation works are in progress.
(b) P82L pre-bored sheet pile is in
progress.
(c) P83R pile cap excavation work and
waling & struts installation is in progress.
(d) Portal Works:
Pier Location |
Progress |
P84 |
Steel bracket and girders
erection completed; |
P87 |
Erection of steel bracket
system completed, formwork erection is in progress; |
P88 |
Portal concrete was poured on
24 April 2015; |
P90 |
Formation work is in progress; |
P91 |
Erection of steel cross beams
and falsework is in progress |
P93 |
Portal concrete was poured on
11 April 2015, removal of formwork is in progress; |
P94 |
Removal of falsework is
in progress; |
P95 |
Removal of falsework
is in progress; |
P96 |
Removal of falsework
completed; |
P98 |
Removal of falsework
completed; |
P99 |
Removal of falsework
completed; |
Marine Viaduct (P0 to P80)
Reverse Circulation Drill (RCD) Method (except
P68 & P75):
(a) Piling
jackets were dismantled at P69.
(b) No pile
excavations, casing installation and concrete casting in the reporting period.
(c) Inter-face
coring tests were carried out at P6, P57 & P69.
(d) P6-L2
& P69-R1 Full depth coring test was carried.
(e) Sonic
tests were carried out at P5, P6, P9, P56, P57 &
P69.
(f) Grouting
works were carried out at P10, P11, P56 & P69.
Progress at
P68 & P75
(a) Temporary platform formation is on-going (about 32,000 tonnes of grade
150 fill and 6,000 tonnes of rock armour placed).
(b) Jacket was installed
on right-hand side (RHS) and casing driven.
(c)
Excavation to formation (at concrete plug base) level by breaker &
chisel at P75 R & L continued.
Disposal from Marine Works
(a)
The disposals in this reporting
period are shown in below table.
Disposal Location |
No of Trip |
Type of Materials |
TM38 |
0 |
Inert
Materials |
TMCLK |
0 |
Inert
Materials |
HK
Open Sea Mud Pits |
0 |
Types
II Marine Mud |
Cross
Boundary Disposal |
0 |
Type I
Marine Mud |
Pilecap Construction:
(a) 10 precast cap shells were installed P2L,
P7, P13, P15, P26R & P58.
(b) Stage 1 concreting was completed
at P1, P54 & P58R.
(c) Stage 1 works is in progress at P1, P15, P54 & P58R.
(d) Stage 2
concreting was completed at P1, P12, P17L, P22 &
P23.
(e) Stage 2 works is in progress at P1, P12,
P17L, P22, P23 & P54.
(f) Kingpost
installation and associated steel welding works for precast shell installation
are in progress at P55 & P80.
(g) Concrete trimming and advanced trimming
(inside casing) works were carried out at P10, P11, D17-F1, D19-F1, D20-F1,
P26R, P54, P55, P56 & P58.(h) Submerged pilecap
works with cofferdam:
Pier Location |
Side |
Progress |
P74 |
L |
Trimming of pile head concrete
is in progress |
R |
Concreting works of concrete
beam completed on 29-Apr-15 |
|
P75 |
L |
Rock excavation is in progress |
R |
Rock excavation is in progress |
|
P76 |
L |
Concreting works of pile cap
completed on 20-Apr-15 |
R |
Steel Fixing works of pile cap
is in progress |
|
P77 |
R |
Concreting works of pile cap
completed on 2-Apr-15 |
In-situ Column Construction
(a) 1st lift works is in progress at P14, P22 & P24.
(b) 1st lift concrete was poured at P16, P21, P25
& P70.
(c) 2nd lift works: N/A.
(d) Pier head works is in progress at P53.
(e) Pier head concreting was poured at P59 & P62.
Precast Column Erection
Description |
Location
completed in this reporting period |
Number
of Units erected/ Number of Columns completed in this reporting period |
Cumulative
No. of Piers completed (up
to 28th of each month) |
Precast
Column Base Unit |
P28,
P29 |
4 |
17
(P28-P44) |
Precast
Column Pier Head |
P30,
P31 |
4 |
15
(P30-P44) |
Vertical
Tendons Stressed |
P39,
P40, P41, P42 |
8 |
6
(P39-P44) |
Grouting
Vertical Tendons |
P40,
P42 |
4 |
3.5
(P40, P42, P43L, P44) |
Pier
Head Concrete |
P44 |
2 |
1
(P44) |
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P18 |
L |
Poured concrete to 1st
lift and 2nd lift in progress |
R |
Poured concrete to 1st
lift and 2nd lift in progress |
|
P19 |
L |
Poured concrete to 5th
& 6th lift and started for 7th lift |
R |
Poured concrete to 5th
& 6th lift and started for 7th lift |
|
P72 |
L |
Just commenced |
R |
Just commenced |
|
P73 |
L |
Poured concrete to 2nd
lift and pier head in progress |
R |
All cast in April 2015, total
3 lifts (including pier head) |
Marine Portal
(a) Portal at P52 was casted on 18 April 2015.
(b) Steel fixing at P60 is in progress.
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Lifting
Frames 1 (LF1) |
Assembly of the first set of
LF1 is on-going at WA4; Steelwork for the 2nd
set of Lifting Frames is under fabrication with some deliveries commenced. |
Lifting
Frames 3 (LF3) |
Fabrication of LF3 in China
has commenced. Some major components have been completed, and some deliveries
have been commenced. Assembly of
the first 4 sets of LF3 is targeted to be commenced by mid-April at WA4. 2
sets will be assembled at WA4 by Mid-May |
Launching
Gantry 1 (LG1) |
LG1 in operation and erection
of P113-P114 (R&C) is under progress |
Launching
Gantry 2 (LG2) |
Load test and commissioning of
the first part have been completed, erection of segments to P46 and P47 in
progress |
(b)
Segment erection:
-
A cumulative total of 140 segments have been erected
Type |
Location of Segments erected in this reporting
period |
Number of Segments erected in this reporting period |
Cumulative No. of Segments erected (up to 28th of each month) |
LG1* |
P113
& P114 |
62 |
174 |
LG2 |
P46-P47 |
44 |
48 |
SOP |
P64 |
4 |
28 |
Precast Segment
(a)
Segment Casting:
-
Segment production has resumed on 20 April 2015.
-
Storage for long span & type D segments is
still the main issue.
Item |
Number in this reporting period |
Cumulative No. of Precast Segment Completed (up to 28th of each month) |
Segment
Cast |
75 |
1925 |
(b)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134 |
A2 |
228 |
A3 |
32 |
Precast Concrete Shell Casting
(a) Summary
of precast shell cast in the precast yard:
Type of Shell |
Number of Precast Shell Cast in this reporting
period |
Cumulative No. of Precast Shell Completed (up to 28th of each month) |
CP1 |
6 |
87 |
CP2 |
Completed |
12 |
CP3 |
2 |
10 |
CP4 |
Completed |
8 |
CP5 |
Completed |
6 |
CP6 |
Completed |
4 |
CP11 |
1 |
1 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All
the 5 moulds are in service for precast production.
- Totally 37
precast elements (12 piers with 3m high, 15 piers with 6m high, 7 monolithic pier
heads and 3 pier heads with bearing support) were cast in this reporting period.
- Cumulatively
199 precast elements have been produced.
Delivery for Precast Concrete Elements (by barge)
(a)
Precast Deck Segments:
-
Number of additional barges engaged in this period:
0
-
Cumulative number of barges: 9
-
Number of Deck Segment deliveries in this period:
21 trips
-
Cumulative number of Deck Segment deliveries: 64
trips
Segment Types |
Segment Delivered in this reporting period |
Cumulative No. of Precast Segment Delivered (up to 28th of each month) |
A |
48 |
88 |
B |
0 |
0 |
C |
0 |
0 |
D |
0 |
0 |
E |
50 |
214 |
(b)
Precast column units:
-
Number of additional barges engaged in this period:
0
-
Cumulative number of barges: 1
-
Number of column unit deliveries in this period: 5
trips
-
Cumulative number of column unit deliveries: 24
trips
Unit Types |
Number of units delivered in this reporting period |
Cumulative No. of Precast Column Delivered (up to 28th of month) |
3m |
2 |
18 |
6m |
14 |
48 |
PH1 |
2 |
20 |
PH2 |
2 |
10 |
(c)
Temporary storage of long span segments:
-
Number of barges engaged in this period: 1
-
Cumulative number of barges: 3
-
Second Long-span storage barge loaded with long
span segments on
21 Apr 2015
-
Preparation of 3rd Long-Span storage barge is
ongoing.
May 2015:
Land
Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) P81L pile cap was completed and
column construction work is in progress.
(b) P81R excavation works was
completed and reinforced concrete works is in progress.
(c) P82L pre-bored sheet pile was
completed and P82L&R excavation works are in progress.
(d) P83R pile cap was completed and
pre-bored sheet pile was completed.
(e) Portal Works:
Pier Location |
Progress |
P84 |
Steel bracket and girders
erection completed; Pier head construction is in
progress |
P86 |
Formation for falsework is in progress |
P87 |
Steel fixing is in progress, target to concrete by
end May 2015 |
P88 |
Removal of falsework
is in progress |
P89 |
Formation for falsework is in progress |
P90 |
Steel bracket erection
completed; Erection of planking and steel
cross beams at road side is in progress |
P91 |
Formwork erection completed; Steel fixing is in progress |
P92 |
Erection of soffit formwork
and construction of lower bearing plinths is in progress |
P93 |
Removal of falsework
completed; Removal steel cross beams is
in progress |
P94 |
Removal of falsework
and steel bracket completed |
P95 |
Removal of falsework
completed |
Marine Viaduct (P0 to P80)
RCD Method (locations other than P68 & P75):
(a) Inter-face
coring tests were carried out at P8 & D17.
(b) P6-L2
& P9-R2 Full depth coring test was carried.
(c) Sonic
tests were carried out at P8, P9 & D17.
(d) Grouting
works were carried out at P6, P8, P57 & P69.
Progress at
P68
(a) Temporary Rockfill platform formation
completed.
(b) Outer and inner
permanent casings were installed on left hand side
(LHS).
(c) Annulus concrete
around casings was cast.
(d) Infill concrete between
inner and outer casing was cast.
(e) Torque frame was installed on LHS and right hand side (RHS).
(f) Temporary access to spoil barge was installed.
(g) RCD were set up on LHS.
Progress at
P75
(a) Excavation to formation (at concrete plug base) level by breaker &
chisel at P75 RHS was completed and levelling/preparation for cofferdam box
installation is on-going.
Disposal from Marine Works
(a)
The disposals in this reporting
period are shown in below table.
Disposal Location |
No of Trip |
Type of Materials |
TM38 |
0 |
Inert
Materials |
TMCLK |
0 |
Inert
Materials |
HK
Open Sea Mud Pits |
0 |
Types
II Marine Mud |
Cross
Boundary Disposal |
0 |
Type I
Marine Mud |
Pilecap Construction:
(a) 2 precast cap shells were installed P55.
(b) Stage 1 concreting was completed
at P2L, P7, P13 & P58L.
(c) Stage 1 works is in progress at P26R.
(d) Stage 2
concreting was completed at P15, P54 & P58R.
(e) Stage 2 works is in progress at P7, P13
& P58L.
(f) Kingpost
installation and associated steel welding works for precast shell installation
are in progress at P57.
(g) Concrete trimming and advanced trimming
(inside casing) works were carried out at P5L, P11, D17-F1, P26R (inside
shell), P56 & P57.
(h) Submerged pile cap works with cofferdam:
Pier Location |
Side |
Progress |
P71 |
L |
Backfilling and removal of cofferdam completed on
8-May-15 |
R |
Backfilling and removal of cofferdam completed on
8-May-15 |
|
P73 |
L |
Backfilling and removal of cofferdam started on 20-May-15 |
R |
Backfilling and removal of cofferdam started on 20-May-15 |
|
P74 |
L |
Trimming of pile head concrete is in progress |
R |
Concreting works of concrete plug and concrete beam
completed and dewatering to the bottom of cofferdam will be carried out |
|
P75 |
L |
Rock excavation is in progress |
R |
Rock excavation is in progress |
|
P76 |
R |
Concreting works of pile cap completed on 2-May-15 |
In-situ Column Construction
(a) 1st lift works is in progress at P1, P3, P4, 59L-ramp &
P78.
(b) 1st lift concrete was poured at P12, P14, P22, P23, P24, P54 & P59R-ramp.
(c) 2nd lift works is in progress at P54 and P70R.
(d) 2nd lift concrete was poured at P70L.
(e) Pier head works is in progress at: nil
(f) Pier head concreting was poured at P53.
Precast Column Erection
Description |
Location
completed in this reporting period |
Number
of Units erected/ Number of Columns completed in this reporting period |
Cumulative
No. of Piers completed (up
to 28th of each month) |
Precast
Column Base Unit |
P21,
P27 |
4 |
19
(P21, P27-P44) |
Precast
Column Pier Head |
Nil |
0 |
15
(P30-P44) |
Vertical
Tendons Stressed |
P37,
P38 |
4 |
8
(P37-P44) |
Grouting
Vertical Tendons |
P39,
P41, P43R |
5 |
6
(P39-P44) |
Pier
Head Concrete |
P42,
P43 |
4 |
3
(P42-P44) |
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P17 |
L |
Works commenced |
R |
Works commenced |
|
P18 |
L |
Poured concrete to 3rd lift and 4th
lift in progress |
R |
Poured concrete to 3rd lift and 4th
lift in progress |
|
P19 |
L |
All cast in May 2015, total 7 lifts |
R |
All cast in May 2015, total 7 lifts |
|
P20 |
L |
All cast in March 2015, total 7 lifts |
R |
All cast in March 2015, total 7 lifts |
|
P71 |
L |
All cast in February 2015, total 3 lifts (including pierhead) |
R |
All cast in March 2015, total 3 lifts (including pierhead) |
|
P72 |
L |
Poured concrete to 1st lift and 2nd
lift in progress |
R |
Poured concrete to 1st lift and 2nd
lift in progress |
|
P73 |
L |
All cast in May 2015, total 3 lifts (including pierhead) |
R |
All cast in April 2015, total 3 lifts (including pierhead) |
|
P77 |
L |
Works commenced |
R |
Works commenced |
Marine Portal
(a) Formwork removal and remedial works for Portal at P52 are in progress.
(b) Portal at P60 was casted on 16 May 2015.
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Lifting
Frames 1 (LF1) |
Assembly of the first &
second set of LF1 is on-going at WA4; Steelwork for the 3rd
and 4th set of Lifting Frames is under fabrication with some
deliveries commenced. |
Lifting
Frames 3 (LF3) |
Fabrication of LF3 in China is
almost completed for 8 sets. Most of the major components have been
completed, and have been delivered to site. Assembly of the first 2 sets of LF3 is
completed. The 3rd and 4th sets are targeted to be
completed by early-June at WA4. Assembly of the 5th to 8th
sets will commence in June as well. |
Launching
Gantry 1 (LG1) |
LG1 in operation and launching
back to P112L is in progress. |
Launching
Gantry 2 (LG2) |
Commissioning completed for
segment erection; Load test part 2 for launching
scheduled in June. |
(b)
Segment erection:
-
A cumulative total of 140 segments have been erected
Type |
Location of Segments erected in this reporting
period |
Number of Segments erected in this reporting period |
Cumulative No. of Segments erected (up to 28th of each month) |
LG1 |
P108
& P113 & P114 |
46 |
220 |
LG2 |
P46-P47 |
32 |
80 |
SOP |
P44 & P63 |
8 |
36 |
Precast Segment
(a)
Segment Casting:
-
Storage for long span & type D segments is
still the main issue.
Item |
Number in this reporting period |
Cumulative No. of Precast Segment Completed (up to 28th of each month) |
Segment
Cast |
164 |
2089 |
(b)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134 |
A2 |
226 |
A3 |
98 |
Precast Concrete Shell Casting
(a) Summary
of precast shell cast in the precast yard:
Type of Shell |
Number of Precast Shell Cast in this reporting
period |
Cumulative No. of Precast Shell Completed (up to 28th of each month) |
CP1 |
3 |
90 |
CP2 |
Completed |
12 |
CP3 |
2 |
12 |
CP4 |
Completed |
8 |
CP5 |
Completed |
6 |
CP6 |
Completed |
4 |
CP11 |
Completed |
1 |
CP12 |
1 |
1 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All
the 5 moulds are in service for precast production.
- Totally 30 precast
elements (5 piers with 3m high, 20 piers with 6m high, 4 monolithic pier heads and 1 pier heads with
bearing support) were cast in this reporting period.
- All
the 3m high piers
have been completed in this period (in total 39 elements).
- Cumulatively
229 precast elements have been produced.
Delivery for Precast Concrete Elements (by barge)
(a)
Precast Deck Segments:
-
Number of additional barges
engaged in this period: 2
-
Cumulative number of barges: 11
-
Number of Deck Segment
deliveries in this period: 14 trips
-
Cumulative number of Deck
Segment deliveries: 67 trips
Segment Types |
Segment Delivered in this reporting period |
Cumulative No. of Precast Segment Delivered (up to 28th of each month) |
A |
38 |
130 |
B |
0 |
0 |
C |
0 |
0 |
D |
0 |
0 |
E |
38 |
252 |
(b)
Precast column units:
-
Number of additional barges engaged in this period:
1
-
Cumulative number of barges: 4
-
Number of column unit deliveries in this period: 3
trips
-
Cumulative number of column unit deliveries: 27
trips
Unit Types |
Number of units delivered in this reporting period |
Cumulative No. of Precast Column Delivered (up to 28th of month) |
3m |
0 |
18 |
6m |
10 |
56 |
PH1 |
0 |
20 |
PH2 |
4 |
10 |
(c)
Temporary storage of long span segments:
-
Number of barges engaged in this period: 1
-
Cumulative number of barges: 4
-
4th barge loaded
with long span.
2.11
The valid environmental licenses and permits were attached in
the Monthly EM&A Reports.