Lessons Learned on Singapore's DTSS

In this article the authors offer some conclusions regarding the completion of Singapore’s recent Deep Tunnel Sewage System (DTSS) excavation project. The tunnels of the new system will carry wastewater by gravitational inertia to two recently built water reclamation plants (WRP). Eight earth pressure balance boring machines (EPBM) were used for the project. Local geology consisted of old alluvium, granite, and soil-like materials. An overview of the advance rates of each machine is presented with speed, problems with intrusion, and cutterhead replacement rates due to abrasion. The structural lining used was bolted, precast concrete in segments with full grouting for the annular void. A review of the project is structured into the following sections: the design/build contracts, preliminary design detail, locations of permanent maintenance shafts, tunneling beneath major roadways, and aspects related to the tunnel boring machines (TBM) used.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Authors:
  • Marshall, Robert
  • Flanagan, Richard
  • Kiak, Ang-Tan Seow
• Publication Date: 2007-10

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; Tables;
• Pagination: pp 23-26
• Serial:
  • Tunnels & Tunnelling International
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Sewage disposal; Tunnel borers; Tunnel lining; Tunneling
• Geographic Terms: Singapore
• Subject Areas: Bridges and other structures; Construction; Pipelines;

Filing Info

• Accession Number: 01082310
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS
• Created Date: Nov 30 2007 7:25AM