SEIKAN TUNNELLERS FACE BAD GROUND

The author describes some of the problems encountered in constructing the Seikan undersea railway tunnel in Japan. Three tunnels are being built, the main tunnel, a pilot tunnel and a service tunnel. Setbacks have been caused by the geology of the seabed, a mixture of igneous rocks, tuff and mudstone. High water pressures have resulted in falls and very high rates of water ingress, the latest problem occurring when water burst into the workings and flooded sections of the three tunnels. Extensive grouting has been carried out to control inflow and new boring methods are being evolved to try and combat the problems of water laden strata. Experiments are also being tried with a diventip type electro drill and double pipe boring using a casing pipe. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00107859
• Corporate Authors:

  IPC Building and Contract Journals Limited

  Surrey House, 1 Throwley Way
  Sutton, Surrey SM1 4QQ,   England 
• Authors:
  • Gosney, J
• Publication Date: 1976-5-27

Language

• English

Media Info

• Features: Photos;
• Pagination: p. 21
• Serial:
  • CONTRACT JOURNAL
  • Volume: 270
  • Issue Number: 5047
  • Publisher: Reed Business Information, Limited
  • ISSN: 0010-7859

Subject/Index Terms

• TRT Terms: Construction management; Floods; Geological events; Grouting; Railroads; Tunneling; Tunneling machines; Tunnels; Underwater construction
• Identifier Terms: Nihon kokuyu tetsudo
• Geographic Terms: Asia; Japan
• Old TRIS Terms: Geological conditions; Railway; Submarine tunneling
• ITRD Terms: 8005: Asia; 3666: Construction method; 2569: Flooding; 8053: Japan; 3374: Tunnel
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Hydraulics and Hydrology; Railroads; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00141507
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Nov 3 1976 12:00AM