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- W2361888143 abstract "Based on unloading tests of rock samples,the deformation,parameters and fracture features of rocks under unloading are studied.The test results show that:(1) The characteristics of intense rebound deformation,distinct dilatancy and brittleness failure of rocks are all shown in the process of unloading.(2) Deformation modulus E gradually decreases and Poisson ratio μ increases in the process of unloading.The deceasing amount of E is 5%–27%,while μ increasing 50%–335%.The variables all increase with initial confining pressure increasing and unloading intensity,which are related with volumetric strain.(3) The cohesion c decreases but the internal friction angle φ increases relatively with the loading tests,and both are less with unloading intensity.The peak value of c decreases 33.2%–47.8%,and remains normal value of 65.3%–77.6%;peak value of φ increases 14.7%–33.2%,and remains normal value of 5.9%–9.4%.(4) The fracture is characterized by strong tensile,and all tensile cracks are fully developed,showing hypo-unloading when the rock samples are unloaded in two directions;and the shear fractures expand following tensile cracks." @default.
- W2361888143 created "2016-06-24" @default.
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- W2361888143 date "2008-01-01" @default.
- W2361888143 modified "2023-09-26" @default.
- W2361888143 title "EXPERIMENTAL RESEARCH ON MECHANICAL PROPERTIES OF GRANITES UNDER UNLOADING CONDITION" @default.
- W2361888143 hasPublicationYear "2008" @default.
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