THE HONG KONG MASS TRANSIT IMMERSED TUBE--SOME ASPECTS OF CONSTRUCTION

MTRC Contract 103- Immersed Tube, comprised the construction of a twin tube tunnel 1400m long between Tsimshatsui and Wanchai including the North and South Ventilation Buildings and associated works. The immersed tube is located beneath Victoria Harbour starting within reclaimed land adjacent to Fenwick Street, Wanchai, on the Island, to a point approximately 24m seaward of the then existing seawall south of Nathan Road in Tsimshatsui, Kowloon, and forms the major part of the longest stretch of line between stations on the MIS. The tunnel comprises fourteen 100m long concrete units and the contract included demolition and reconstruction of the Wanchai seawall and provision of temporary access to the North Ventilation Building (NVB). Included in the construction of the concrete ventilation buildings were emergency stairs, the provision and installation of floodgates and all building and architectural works. Kumagai, Gumi Co. Ltd of Japan were awarded the contract in March 1976 with a tender and construction method being based on the engineer's design. The period of contract was 196 weeks, from March 1976 to contract completion at 30 December 1979. This paper describes in detail the major activities of this project such as: construction of the dry dock and the 14 tunnel units, the dredging of the trench across the harbor, screening the trench bottom with an aggregate bed, backfilling the trench, constructings of two ventilation building caissons, installation of the floodgates and reconstruction of the seawalls at Wanchai and Tsimushatsui.

• Corporate Authors:

  Hong Kong Institution of Engineers

  1005 Capitol Centre, 5-19, Jardine's Bazaar
  Causeway Bay,   Hong Kong 
• Authors:
  • Kennedy, M J
• Publication Date: 1980-1

Media Info

• Features: Appendices; Figures;
• Pagination: p. 9-22
• Serial:
  • Hong Kong Engineers
  • Volume: 8
  • Issue Number: 1
  • Publisher: Hong Kong Institution of Engineers

Subject/Index Terms

• TRT Terms: Caissons; Docks; Dredging; Floods; Gates; Heat insulating materials; Screeds; Sea walls; Trench backfill; Tunnel lining; Tunneling; Tunnels; Ventilation systems
• Subject Areas: Bridges and other structures; Construction; Highways; Hydraulics and Hydrology; Marine Transportation; Public Transportation;

Filing Info

• Accession Number: 00311334
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 27 2003 12:00AM