-中国企业技术创新网--见证中国企业技术创新历程！ 关键词：矿柱；稳定性；充填；结构面；岩体强度 [gap=1103]Keywords: Rock Pillar; stability; filling; planes of weaknesses; strength of rock mass
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composite strength of rock mass 岩体复合强度
compressive strength of rock mass 岩体抗压强度
The mechanical strength of rock mass will decreases after relaxation.
岩体发生松弛后，松弛带岩体力学参数明显降低。
Based on the viewpoints of rock fracture mechanics, compressive strength of rock mass controlled by discontinuities is discussed.
基于岩体断裂力学的观点，探讨基于结构面扩展的岩体抗压强度准则。
Stress concentration occurs in surrounding rocks, while the maximum tension stress is less than the tensile strength of rock mass, so tensile crack does not take place.
动荷载作用下地下硐室群围岩出现较大的应力集中，但最大拉应力小于岩体的抗拉强度，地下硐室群围岩不会出现拉裂破坏。
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