SETTLEMENTS CAUSED TUNNELLING IN WEAK GROUND AT STOCKTON-ON-TEES

Measurements of ground settlement caused by the construction of a one-metre diameter tunnel are described, together with tests on soil samples taken from the tunnel face and in situ shear strength measurements made with a pocket vane tester. The tunnel was driven at a depth of about 7m through a soft to very soft silty clay having an average vane shear strength of about 50 kN/sq m. The maximum ground surface settlement recorded was 56mm and the cross-sectional area of the settlement through at the same point represented more than 42 percent of the area of the tunnel face. /Author/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • McCaul, C
• Publication Date: 1978

Media Info

• Features: Figures; References; Tables;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Excavation and tunneling; Field tests; Ground settlement; Sampling; Shear strength; Silts; Soft clays; Soils; Tunneling; Vane shear tests
• Old TRIS Terms: Insitu methods; Soil sampling
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 00179367
• Record Type: Publication
• Report/Paper Numbers: TRRL Supp Report 383
• Files: TRIS
• Created Date: Sep 14 1978 12:00AM