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1985
Guenot, A., Morgenstern, N., Kaiser, P. K.
Tests on small circular openings have been conducted to investigate the deformation processes near tunnels at large depth or in weak rock. The test equipment has been described in Part 1; typical test results documenting the behaviour of small tunnels in a jointed rock mass with time-dependent...
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Design and performance evaluation of vertical shafts: rational shaft design method and verification of design method
Download1988
Ground deformations around axisymmetric shafts cannot be determined with the design approaches currently available, which are mostly based on plasticity methods. The convergence–confinement method (usually applied to tunnels), with consideration of gravitational effects and the three-dimensional...
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1993
Chan, D. H., Tannant, D. D., Kaiser, P. K.
Abstract: During an excavation-response experiment performed at the Underground Research Laboratory (Atomic Energy of Canada Limited, Pinawa, Man.) a decrease in fracture-zone transmissivity was measured as a tunnel intersected the room 209 fracture zone. The decrease in transmissivity was...
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1999
Kaiser, P. K., McCreath, D. R., Martin, C. D.
Abstract: A review of underground openings, excavated in varying rock mass types and conditions, indicates that the initiation of brittle failure occurs when the damage index, Di, expressed as the ratio of the maximum tangential boundary stress to the laboratory unconfined compressive strength...
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2003
Christiansson, R., Martin, C. D., Kaiser, P. K.
Abstract: When the stress-induced risks to a projects warrant it, in situ stress must be measured. However, as the stress-induced risks increase, i.e.. the stress magnitudes approach the rock mass strength, the confidence in commonly used stress measurement techniques decrease. The design of...