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为探索岩石在载荷作用下变形破坏过程中能量的能量演化机制,对红砂岩进行了单轴、三轴压缩试验,获得了岩石加载过程中能量随应力、应变的演化与分配规律.结果表明:岩石的变形破坏过程是能量耗散与释放的结果;单轴压缩及较低围压下岩石在峰值后积聚的能量突然释放,这也是其呈现脆性破坏的主要原因;在较高围压下,岩石峰后能量随围压的升高由释放向逐渐耗散转变.
In order to explore the energy evolution mechanism of rock energy during deformation and failure under the load, the red sandstone was subjected to uniaxial and triaxial compression tests, and the evolution and distribution of energy with stress and strain during rock loading were obtained.The results show that: The process of deformation and failure of rock is the result of energy dissipation and release. The sudden release of energy accumulated in the rocks after uniaxial compression and lower confining pressure, which is also the main reason for the brittle failure; under high confining pressure, After the rock peak energy with the confining pressure increased from release to gradually dissipate the change.