PRIMARY STRESS MEASUREMENTS AT EISENHOWER MEMORIAL TUNNEL, COLORADO

The in-situ stresses at Eisenhower Memorial Tunnel, Colorado were measured by the overcoring stress relief method. The tunnel bears east-west and penetrates the ridge of the continental divide, which locally trends n 20 e. The stresses are: (1) 900 plus or minus 200 psi (63 plus or minus 14 kg/sq cm) acting vertically; (2) 400 plus or minus 200 psi (28 plus or minus 14 kg/sq cm) acting horizontally parallel to the ridge, and (3) 100 plus or minus 200 psi (7 plus or minus 14 kg/sq cm) acting horizontally perpendicular to the ridge. The vertical stress correlates well with that expected due to a static overburden. The relation between the ridge orientation and the horizontal stress orientations suggests that the horizontal stresses depend on local topography. /Author/TRRL/

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  • Corporate Authors:

    Pergamon Press, Incorporated

    Headington Hill Hall
    Oxford OX30BW,   England 
  • Authors:
    • WHITE, J M
    • Hoskins, E R
    • Nilssen, T J
  • Publication Date: 1978-8

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Filing Info

  • Accession Number: 00189201
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 12 1979 12:00AM