THE CRUNCHINGMOLE ON TYNESIDE

The authors describe construction of a trial length of the eastern interceptor sewer, Tyneside, through an area covered by soft silty alluvium which lies over a thick layer of loose river sand and gravel containing cobbles and small boulders. These water-bearing strata lie on top of a glacial hill. An Iseki crunchingmole tunnel-boring machine, a full face remote controlled bentonite slurry shield, was used. The machine incorporated an integral stone crusher, avoiding the need for compressed air and supplementary ground treatment. Excavation through the heavily cobbled soil, difficulties encountered and the completion of the operation by limiting the maximum torque of the cutter head to 60 percent of the design rating through a mixed face of clay, sand, gravel and cobbles are described. The shield could be steered to close tolerances. (TRRL)

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• Corporate Authors:

  Specialist and Professional Press

  Surrey House, 1 Throwley Way
  Sutton, Surrey SM1 4QQ,   England 
• Authors:
  • Atkin, R
  • Newham, A
• Publication Date: 1984-10

Media Info

• Features: Figures; Photos;
• Pagination: p. 7-10
• Serial:
  • SURVEYOR
  • Volume: 163
  • Issue Number: 4814
  • Publisher: Hemming Group, Limited
  • ISSN: 0039-6303

Subject/Index Terms

• TRT Terms: Alluvium; Bentonite; Cobbles; Crushers; Drainage; Engineering tolerance; Full face tunneling; Glacial soils; Gravel; Pipe; Sand; Sewers; Till; Tunnel shields; Tunneling machines
• Uncontrolled Terms: Cobblestones
• Geographic Terms: United Kingdom
• Old TRIS Terms: Shields (Tunneling); Tolerances
• ITRD Terms: 4186: Bentonite; 4198: Boulder clay; 2937: Drainage; 3383: Full face tunnelling machine; 4011: Glacial; 3361: Pipe; 8119: United Kingdom
• Subject Areas: Bridges and other structures; Construction; Highways; Hydraulics and Hydrology; Maintenance and Preservation; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00393281
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jun 30 1985 12:00AM