SOIL MELTING-A PRACTICAL TRIAL

The article describes the subterrene system designed for tunnelling in loosely compacted formations in which a glass lining is formed to support a tunnel roof either as a temporary or a permanent measure. In tests the roof and sides of an experimental tunnel were formed by melting a series of 50mm diameter horizontal holes approximately 2M deep in a loose fill material using electrically heated consolidating subterrene penetrators. The holes were sufficiently close for the glass linings to fuse and so produce a double walled lining reinforced by webs. After tunnel roof and walls were formed, the fill material could be excavated by hand. A long-term development of this system includes equipment to melt a continuous kerf around the periphery of a tunnel being constructed in unconsolidated material so that the melt would be deposited in the form of a thick glass tunnel lining. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Corporate Authors:

  Morgan-Grampian Limited

  30 Calderwood Street
  London SE18 6QH,   England 
• Authors:
  • Williams, R E
• Publication Date: 1975-1

Language

• English

Media Info

• Features: Figures; Photos;
• Pagination: p. 44-45
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 7
  • Issue Number: 1
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Construction management; Electricity; Equipment; Excavation and tunneling; Fusion; Glass; Heat; Material reinforcement; Melting; Soils; Structural supports; Tunnel lining; Tunnels; Unconsolidated soils; Webbing
• Old TRIS Terms: Fusing /melting/; Supports
• ITRD Terms: 3666: Construction method; 6954: Electricity; 5270: Fusion; 4547: Glass; 6743: Heat; 4156: Soil; 3374: Tunnel; 3385: Tunnel lining
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00129564
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Apr 7 1976 12:00AM