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- W366580230 abstract "It is well known that the mechanical behaviour of fractured rock is strongly influenced by the state of joints. Joint orientation, contact pressure at joints and physical properties such as fracture (joint) frequency, aperture, roughness, alteration and moisture content are predominant parameters in the mechanical behavour of rock mass. This article investigates the mechanical behaviour of jointed rocks using the plate bearing test, the rock shear test, and the borehole loading test in association with the laboratory test. However, it has been found that joint behaviour is very hard to analyze in the laboratory and the employment of a limited number of specimens give rather unreliable and unrealistic results. It is concluded that the physical properties of joints must be determined in situ in an undisturbed condition in order to obtain reasonable results. An attempt to solve this problem has been made by introducing the concept of joint stiffness. The joint stiffnesses for normal and shear directions are considered as the overall indexes which cover roughness, alteration and aperture at joints at the same time. The objective is to clarify the relationship between physical properties of joints and joint stiffnesses through the execution of the borehole jack loading test. (TRRL)" @default.
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- W366580230 date "1988-01-01" @default.
- W366580230 modified "2023-09-24" @default.
- W366580230 title "NUMERICAL INTERPRETATION OF BOREHOLE JACK TEST IN CONSIDERATION OF JOINT STIFFNESS. PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN GEOMECHANICS, 11-15 APRIL 1988, INNSBRUCK, AUSTRIA. VOLUMES 1 - 3" @default.
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