Rock bending creep and disturbance effects |
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| Authors: | FU Zhi-liang ZHENG Ying-ren LIU Yuan-xue |
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| Affiliation: | FU Zhi-liang1,2,ZHENG Ying-ren2,LIU Yuan-xue2(1.Key Laboratory of Ministry of Education Co-sponsored by Province , Ministry Laboratory of Safety , High Efficient Coal Mining,College of Energy Resources , Safety Engineering,Anhui University of Science , Technology,Huainan 232001,China,2.Department of Architectural Engineering,Logistical Engineering University,Chongqing 400041,China) |
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| Abstract: | The bending creep and its disturbance effects of red sandstone rock beam and oil shale rock beam were studied by adopting the self-developed gravitation level style rock creep test machine and bending creep test system,and the constitutive equations were established.It is found that fracture morphology of rock beams under no disturbance load is regular,cracking position of fractures is on part of loading concentration,the crack starts from a neutral plane.However,fracture morphology of rock beams under dist... |
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| Keywords: | rock beam bending creep disturbance load gravity delayed instability |
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