MONITORING SOLUTION PROVIDERS PTE LTD … Project - MBFC RevA.pdfMARINA BAY AND RAFFLES PLACE MRT...

MONITORING SOLUTION PROVIDERS PTE LTD

Protecting Your Future with Monitoring Solution 1 of 20 Tunnel Monitoring

MBFC TunnelMBFC TunnelMBFC TunnelMBFC Tunnel MonitoringMonitoringMonitoringMonitoring The Marina Bay Financial Centre (MBFC) is a purpose-built financial district of the new downtown. The construction of the Marina Bay Financial Centre development comprises two phases, with the first phase completed in 3Q 2010. The entire development is due for completion in 2012. The first phase consists of the office Towers 1 (33 storeys) and 2 (50 storeys), Marina Bay ResidencesMarina Bay ResidencesMarina Bay ResidencesMarina Bay Residences with 428 units and 93,800 square feet of the retail mall. The second phase comprises office Tower 3 (46 storeys), 82,200 square feet of the retail mall and Marina Bay SuitesMarina Bay SuitesMarina Bay SuitesMarina Bay Suites (which will complete in 2013).

Monitoring Solution Providers Pte Ltd (MSP) is actively involved in the monitoring of the existing North South line MRT tunnel and Common Service Tunnel (CST) for various clients (e.g. BFC Development Pte Ltd, Econ Geotech Pte Ltd and Tritech Engineering and Testing Pte Ltd) at about 10 sub-contracts for the development at the Marina Bay Financial Centre. The monitoring zones for the sub-contracts overlap each other with many total stations and glass prisms deployed near to each other in intertwining networks. A brief description of the monitoring work carried out by MSP at MBFC with accompanying sketches and layout plans are given below.



(1)(1)(1)(1) PROPOSED COMMERPROPOSED COMMERPROPOSED COMMERPROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / CIAL DEVELOPMENT AT MARINA BOULEVARD / CIAL DEVELOPMENT AT MARINA BOULEVARD / CIAL DEVELOPMENT AT MARINA BOULEVARD / CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) –––– AUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUB----CONTRACTCONTRACTCONTRACTCONTRACT

AAUUTTOOMMAATTEEDD TTUUNNNNEELL MMOONNIITTOORRIINNGG SSYYSSTTEEMM IINN MMRRTT TTUUNNNNEELL BBEETTWWEEEENN MMAARRIINNAA BBAAYY AANNDD RRAAFFFFLLEESS PPLLAACCEE MMRRTT SSTTAATTIIOONN ((((For BFC Development Pte Ltd) An Automated Deformation Monitoring System (ADMS) was deployed at the existing North South line MRT tunnel between Marina Bay & Raffles Place MRT station (from NB CH 59308 to NB CH 59551 in North Bound and SB CH 59310 to SB CH 59553 in South Bound) for tunnel displacement and vibration monitoring during the construction activity of the project. This ADMS was officially commissioned on 8 August 2006. The instruments used for the system are: 6 Nos. of Sokkia NET1-m-II total stations; 11 Nos. of RST Instantel Minimate PlusTM vibration monitoring sensors The Sokkia NET1-m-II total stations were installed in the MRT tunnel at locations and chainages stated below: Total station Description on Location Chainage STN 1 Inside North Bound Central Wall Crossover Tunnel CH 59250 STN 2 Inside North Bound Crossover Tunnel CH 59390 STN 3 Inside South Bound Crossover Tunnel CH 59490 STN 4 Inside North Bound Cut & Cover Tunnel CH 59600 STN 5 Inside North Bound Bored Tunnel CH 59760 STN 6 Inside North Bound Bored Tunnel CH 59840 The monitoring sensors are located within the North & South Bound MRT tunnel at locations and chainages: Vibration sensor Description on Location Chainage VB 1 Inside North Bound Crossover Tunnel CH 59340 VB 2 Inside North Bound Crossover Tunnel CH 59380 VB 3 Inside North Bound Crossover Tunnel CH 59430 VB 4 Inside North Bound Crossover Tunnel CH 59480 VB 5 Inside North Bound Crossover Tunnel CH 59530 VB 6 Inside South Bound Crossover Tunnel CH 59330 VB 7 Inside South Bound Crossover Tunnel CH 59370 VB 8 Inside South Bound Crossover Tunnel CH 59410 VB 9 Inside South Bound Crossover Tunnel CH 59450 VB 10 Inside South Bound Crossover Tunnel CH 59490 VB 11 Inside South Bound Crossover Tunnel CH 59530 GMB104 Glass Prism profile will be fixed throughout the influence zone. A typical tunnel cross section will consist of a profile of 4 prisms, except for the Crossover Tunnel where 2 tunnel cross section combines consist of 8 prisms.



STN1 to STN3

STN1

STN2

STN3



Reference Prism at Marina Bay Station

REF 901-906 (SB) & REF 104-112 (NB)



Since the monitoring zone involves a cross over section, for the purpose of standardizing the chainage of the prisms in theses location, all prism chainages would be based on the South Bound Tunnel. Fix reference prisms on each side to ensure good redundancy calculation and quality of processed data. The number of reference prism will depend on the site condition. For this particular site, fix reference prisms will be located at both ends of the tunnel (Raffles Place and Marina Bay MRT Station) as there is a monitoring site adjacent to the proposed site currently. As such, it is not adequate to provide fix reference prisms just outside the monitoring zone. The system for each end of the tunnel requires nine (9) fix reference prisms arranged in three (3) prisms per profile.



The 360° change point reference prisms are specially made to reflect EDM emitted from the SOKKIA NET 1m-II from any direction. These prisms are introduced in the system as connection prisms to form a link between 2 or more Total Station.

Typical Layout of 360Typical Layout of 360Typical Layout of 360Typical Layout of 3600000 PrismPrismPrismPrism

Note: Importance of providing good survey geometry between two connecting Automated Total Station, the 3600 prisms are spread over 20-30m providing various length and various height and adequate redundancy

A generalized layout diagram for ATMS is shown below. A generalized layout diagram for ATMS is shown below. A generalized layout diagram for ATMS is shown below. A generalized layout diagram for ATMS is shown below. ––––

CrossCrossCrossCross----sectional sectional sectional sectional ViewViewViewView

Side Elevation Side Elevation Side Elevation Side Elevation ViewViewViewView

Uninterrupted Power Supply with minimum 4 hours backup

Sending

Modem

Receiving

Modem

STN 3

STN 4

STN 2

STN 1

STN 5

STN 6

Comms

24V DC



(2)(2)(2)(2) PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / CENTRAL BOULEVARD (MARINA BAY FINANCIAL CENTRE) PHASE II CENTRAL BOULEVARD (MARINA BAY FINANCIAL CENTRE) PHASE II CENTRAL BOULEVARD (MARINA BAY FINANCIAL CENTRE) PHASE II CENTRAL BOULEVARD (MARINA BAY FINANCIAL CENTRE) PHASE II –––– AUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUB----CONTRACTCONTRACTCONTRACTCONTRACT

AAUUTTOOMMAATTEEDD TTUUNNNNEELL MMOONNIITTOORRIINNGG SSYYSSTTEEMM IINN MMRRTT TTUUNNNNEELL BBEETTWWEEEENN MMAARRIINNAA BBAAYY AANNDD RRAAFFFFLLEESS PPLLAACCEE MMRRTT SSTTAATTIIOONN IINNIITTIIAALL RREEPPOORRTT ((FFoorr BBFFCC DDeevveellooppmmeenntt PPttee LLttdd)) An Automated Deformation Monitoring System (ADMS) was deployed at the existing North-South line MRT tunnel between Marina Bay & Raffles Place MRT station (from NB CH 59226 to NB CH 59376, NB CH 59495 to NB CH 59660 in North Bound and SB CH 59233 to SB CH 59378, SB CH 59492 to SB CH 59662 in South Bound) for tunnel displacement and vibration monitoring during the construction activity of the project. The ADMS was officially commissioned on 8 August 2006. The instruments used for the system are: 2 Nos. of Sokkia NET1m-II total stations 3 Nos. of RST Instantel Minimate PlusTM vibration monitoring sensors



(3)(3)(3)(3) PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) PHASE CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) PHASE CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) PHASE CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) PHASE 2 2 2 2 –––– AUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUB----CONTRACTCONTRACTCONTRACTCONTRACT

AUTOMATED TUNNEL MONITORING SYSTEM IN MRT TUNNEL BETWEEN MARINA BAY AND RAFFLES PLACE MRT STATION (For BFC Development Pte Ltd) PPhhaassee 22 –– RR22 An Automated Deformation Monitoring System (ADMS) was deployed at the existing North-

South line MRT tunnel between Marina Bay & Raffles Place MRT Station (from NB CH 59495

to NB CH 59660 in the North Bound and SB CH 59497 to SB CH 59662 in the South Bound) for

tunnel displacement and vibration monitoring during the construction activity of the Marina

Business Financial Centre Phase 2 – R2 development. The Initial Readings were obtained on

26th December 2007 and the instruments used for the system are:

2 Nos. of Sokkia NET1m-II total stations installed in the MRT tunnel at location and chainage as stated below. Total station Description on Location Chainage STN 3 Inside South Bound Crossover Tunnel CH 59490 STN 4 Inside North Bound Box Tunnel CH 59600 STN 8 Inside South Bound Box Tunnel CH 59580

STN3 to STN4 & STN8



(4)(4)(4)(4) PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / PROPOSED COMMERCIAL DEVELOPMENT AT MARINA BOULEVARD / CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) PHASE CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) PHASE CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) PHASE CENTRAL BOULEVARD (BUSINESS AND FINANCIAL CENTRE) PHASE 2 2 2 2 –––– AUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUBAUTOMATIC TUNNEL MONITORING SYSTEM SUB----CONTRACTCONTRACTCONTRACTCONTRACT

AUTOMATED TUNNEL MONITORING SYSTEM IN MRT TUNNEL BETWEEN MARINA BAY AND RAFFLES PLACE MRT STATION (For BFC Development Pte Ltd) Phase 2 - T3 An Automated Deformation Monitoring System (ADMS) was deployed at the existing North-South line MRT tunnel between Marina Bay & Raffles Place MRT Station (from NB CH 59221 to NB CH 59376 in North Bound and SB CH 59233 to SB CH 59378 in South Bound for tunnel displacement and vibration monitoring during the construction activity of the Marina Business Financial Centre Phase 2 – T3 development. The Initial Readings were obtained on 26th December 2007 and the instruments used for the system are: 3 Nos. of Sokkia NET1m-II total stations installed in the MRT tunnel at location and chainage as stated below. Total station Description on Location Chainage STN 1 Inside North Bound Central Wall Crossover Tunnel CH 59250 STN 2 Inside North Bound Crossover Tunnel CH 59390 STN 7 Inside South Bound Crossover Tunnel CH 59290



STN1 & STN7



Monitoring Solution Providers Pte Ltd (MSP) is also involved in the monitoring of existing North South line MRT tunnel for the construction of the Downtown Line in the Marina Bay area. Two of the Land Transport Authority’s Downtown Line construction projects which MSP participated in are C901 and C907.

PROPOSED DOWNTOWN LINE C901 PROPOSED DOWNTOWN LINE C901 PROPOSED DOWNTOWN LINE C901 PROPOSED DOWNTOWN LINE C901 AUTOMATIC TUNNEL MONITORING AUTOMATIC TUNNEL MONITORING AUTOMATIC TUNNEL MONITORING AUTOMATIC TUNNEL MONITORING SYSTEM FOR NORTH SOUTH LINE SYSTEM FOR NORTH SOUTH LINE SYSTEM FOR NORTH SOUTH LINE SYSTEM FOR NORTH SOUTH LINE MRT TUNNEL FROM MARINA BAY MRT TUNNEL FROM MARINA BAY MRT TUNNEL FROM MARINA BAY MRT TUNNEL FROM MARINA BAY STATION TO OVER RUN AREASTATION TO OVER RUN AREASTATION TO OVER RUN AREASTATION TO OVER RUN AREA Contract 901 is for the construction and completion of the Marina Bay station and tunnels. The scope of the contract also includes addition and alteration works to the existing North South Line (NSL) at Marina Bay station, diversions as well as demolition of an underpass. An Automated Deformation Monitoring System (ADMS) was deployed at the existing North South Line MRT station and tunnel from Marina Bay Station to the overrun area for structural deformation and displacement monitoring during the construction activity of the project. The ADMS was officially commissioned on 8 July 2008 and the instruments used for the system are: 3 Nos. of Sokkia NET1m-II in North Bound Tunnel 3 Nos. of Sokkia NET1-m-II in South Bound Tunnel The manual monitoring of the Marina Bay MRT Station, North & South tunnel monitoring towards Over Run was covered from NB CH 58800 to NB CH 59125 with a total length of 325m and from SB CH 58800 to SB CH 59120 with a total length of 320m. The monitoring system consists of 4 points inside the Bored Tunnel for each ring (i.e. Top, Bottom, Crown & Track Bed). 4 points were also installed for the Station Box (i.e Right, Track Bed, Right Bottom & Right Top).



DOWNTOWNDOWNTOWNDOWNTOWNDOWNTOWN LINE:LINE:LINE:LINE: CONTRACTCONTRACTCONTRACTCONTRACT 907907907907

The Land Transport Authority (LTA) has awarded the civil works contract (C907) for Downtown Line Stage 1 Landmark Station to Taisei Corporation, valued at S$230.3 million. The Landmark Station is located at Central Boulevard near the Marina Bay Financial Centre. The contract covers the construction and completion of the Landmark Station and tunnels. The station will be connected via underground subway links to the Marina Bay Financial Centre. The contract also includes the construction and completion for the main trunk road, Central Boulevard, above the station.

An Automated Deformation Monitoring System (ADMS) was deployed at the existing North South Line MRT station and tunnel from Marina Bay Station to Raffles Place Station for the structural deformation and displacement monitoring during the construction of the project. The instruments used for the system are: 3 Nos. of Zeiss ELTA S10 in the tunnel as stated below. Total station Description on Location Chainage STN N1 Inside North Bound Box Tunnel CH 59250 STN N2 Inside North Bound Box Tunnel CH 59390 STN N3 Inside North Bound Box Tunnel CH 59490

3 Nos. of Sokkia NET 1m-II total stations with bracket installed in the MRT tunnel at location stated below: Total station Description on Location Chainage STN 9 Under Existing MBFC STN 1 CH

59250 STN 10 Under Existing MBFC STN 2 CH

59390 STN 11 Under Existing MBFC STN 3 CH

59490

2 Nos. vibration monitoring sensors located within the North & South Bound Tunnel at location stated below: Vibration sensor Description on Location Chainage VM 1 Inside North Bound Crossover Tunnel CH 59300 VM 2 Inside South Bound Crossover Tunnel CH 59330

MB104 monitoring glass prisms were fixed throughout the influence zone. A typical tunnel cross-section will consist of a profile of 4 prisms, while at the Crossover Tunnel, 2 tunnel cross-sections combine to 8 prisms. Fix reference prisms located at both ends of the tunnel (Raffles Place and Marina Bay MRT Station ensure good redundancy calculation and quality of processed data. The number of reference prism will depend on the site condition. As there is a monitoring site adjacent to the proposed site, it is not adequate to provide fix reference prisms just outside the monitoring zone. The system for each end of the tunnel requires 9 fix reference prisms arranged in 3 prisms per profile. 360° change point reference prisms are specially made to reflect EDM emitted from the Sokkia NET1m-II from any direction. These prisms are introduced in the system as connection prisms to form a link between 2 or more total stations.



AUTOMATED TUNNEL MONITORING SYSTEM FOR COMMON SERVICE AUTOMATED TUNNEL MONITORING SYSTEM FOR COMMON SERVICE AUTOMATED TUNNEL MONITORING SYSTEM FOR COMMON SERVICE AUTOMATED TUNNEL MONITORING SYSTEM FOR COMMON SERVICE TUNNEL MBFC PARCEL (T3 & R2)TUNNEL MBFC PARCEL (T3 & R2)TUNNEL MBFC PARCEL (T3 & R2)TUNNEL MBFC PARCEL (T3 & R2)

- 3 nos. Sokkia NET1-m Total Stations on wall mounted bracket will be installed in the CST tunnels. STN A Under MBFC Parcel T3STN A Under MBFC Parcel T3STN A Under MBFC Parcel T3STN A Under MBFC Parcel T3 STN B Under MBFC Parcel R2STN B Under MBFC Parcel R2STN B Under MBFC Parcel R2STN B Under MBFC Parcel R2 STN C Under MBFC Parcel R2STN C Under MBFC Parcel R2STN C Under MBFC Parcel R2STN C Under MBFC Parcel R2

- GMB104 glass prism will be fixed throughout the influence zone. A typical tunnel cross section will consist of a profile of 4 prisms4 prisms4 prisms4 prisms; refer to the cross-section diagram of the tunnel below.

Typical Sectional LayoutTypical Sectional LayoutTypical Sectional LayoutTypical Sectional Layout

Fix reference prisms are needed to ensure good redundancy calculation and quality of processed data. The number of reference prisms will depend on the site condition. For this particular site, fix reference prisms will be located at both ends of the tunnel outside each monitoring zone. There will be at least 6 reference prisms at each of the monitoring zone. A generalized layouA generalized layouA generalized layouA generalized layout diagram for ADMS in one tunnel bound is shown below. t diagram for ADMS in one tunnel bound is shown below. t diagram for ADMS in one tunnel bound is shown below. t diagram for ADMS in one tunnel bound is shown below. ––––



DOWNTOWNDOWNTOWNDOWNTOWNDOWNTOWN LINE:LINE:LINE:LINE: CONTRACTCONTRACTCONTRACTCONTRACT 907 CST907 CST907 CST907 CST

An Automated Deformation Monitoring System (ADMS) was deployed at the existing Common Service Tunnel at Parcel R2Parcel R2Parcel R2Parcel R2 and Parcel T3 Parcel T3 Parcel T3 Parcel T3 for the structural deformation and displacement monitoring during the construction of the project. The instruments used for the system are: 2 Nos. of Sokkia NET1-m in Parcel R2 1 No. of Sokkia NET1-m in Parcel T3



PROJECT PHOTOGRAPHS



MONITORING SOLUTION PROVIDERS PTE LTD 33 Ubi Avenue 3, #05-31, VERTEX

Singapore 408868 Tel: +65 – 67479766

Fax: +65 – 6458 0824

E-mail: [email protected]

Website: www.mspsystem.com

Co. Reg No: 200210421W

MONITORING SOLUTION PROVIDERS PTE LTD … Project - MBFC RevA.pdfMARINA BAY AND RAFFLES PLACE MRT...

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