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岩石晶粒的破碎，将导致扩容，并产生体积膨胀力。通过引入岩石破坏后的扩容规律，对压剪断裂核的扩容效应进行了探讨
Broken rock grains, will lead to expansion, and produce volume expansion force. By introducing the law of expansion after rock failure, the expansion effect of the compression shear core is discussed