ARTIFICIAL GROUND FREEZING IN SHIELD WORK

This paper described two cases exemplifying the application of ground freezing to shield work in Japan. A circulated coolant refrigeration system was adopted for freezing the ground. In Case 1, a vertical frozen wall of 3.5 meters thick was produced behind an entrance section of a shaft wall to protect entrance excavation of 8.48 meter diameter earth pressure balance shield, and was driven by the revolution of the shield cutter. Case 2, in which a cylindrical frozen wall was formed beneath a sewage effluent culvert in order to allow 5.20 meter diameter blind shield to be driven across. New trials, techniques, and measures to reduce ground surface heave or subsidence were put into practice in these operations.

• Supplemental Notes:
  • Ground Freezing, International Symposium, 2nd, ISGF '80, Norway Institute of Technology, Trondheim, June 24-26 1980.
• Corporate Authors:

  Norwegian Institute of Technology

  N-7034 Trondheim,   Norway 
• Authors:
  • Kiriyama, S
  • Ishikawa, Y
  • Kushida, Y
• Conference:
  • Ground Freezing, International Symposium, 2nd, ISGF '80, Norway Institute of Technology.
  • Location: Trondheim , Norway
  • Date: 1980-6-24 to 1980-6-26
• Publication Date: 1980

Media Info

• Pagination: p. 940-951

Subject/Index Terms

• TRT Terms: Excavation; Freezing; Refrigeration (Structures); Seismicity; Shafts (Machinery); Shields (Tunnels); Soils; Stability (Mechanics); Tunneling; Walls
• Geographic Terms: Japan
• Old TRIS Terms: Shields (Tunneling); Soil freezing; Wall stability
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Public Transportation; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00345448
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Conf Paper
• Files: TRIS
• Created Date: Mar 30 1982 12:00AM