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中文摘要：
针对深部煤炭资源开采水害防治问题，进行了不同岩性岩石在不同围压、不同水压条件下三轴压缩试验，基于强度特征测试结果，研究了岩石强度围压与水压效应，得到岩石强度围压效应、水压效应及耦合效应拟合方程。研究表明：饱和岩块及破坏岩块强度随围压的增大而增加，饱和岩块强度围压效应呈指数关系，水压为0MPa时岩石强度围压效应呈线性关系，水压为3MPa时岩石强度围压效应呈对数关系；岩石残余强度随水压增大而减小，岩石强度水压效应呈负指数关系。
英文摘要：
To counter the prevention and control problem of water disaster in deep coal mining, triaxial compression tests were conducted on the rock with different lithological character under different confining pressure and hydraulic pressure. Based on test results, study was made on the confining pressure and hydraulic pressure effect of the rock strength, and the fitting equations of the rock confining pressure effect, the hydraulic pressure effect and the coupling effect were established. This research showed that the strength of the saturated rock and failure rock increased with the increase of confining pressure, the confining pressure effect of the saturated rock strength was in an exponential relationship, the confining pressure effect of failure rock strength was in a linear relationship when hydraulic pressure was OMPa and the confining pressure effect of failure rock strength was in a logarithmic relationship when hydraulic pressure was 3MPa; the residual strength of rock decreased with the increase of hydraulic pressure, and the hydraulic pressure effect of rock strength was in a negative exponential relationship.
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North China Lower Coal Surrounding Rock Failure Characteristics Study Based on FLAC3D and Fiber Brag
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