【摘要】 岩石失稳破坏经历了能量吸收、储存、耗散和释放过程，为此，采用含充填物砂岩试样，对其进行单轴压缩及三轴压缩试验，研究了不同应力条件下含充填物砂岩的能量演化规律.研究结果表明：在应力到达峰值前，4种试样都以吸收弹性应变能的形式储存能量，到达应力峰值后，4种试样都以释放弹性应变能的形式耗散能量；随着围压的增大，含充填物试样的耗散比逐渐增大；4种试样的总能量、弹性应变能、耗散应变能与围压强度成正比，围压越大，其能量越大.与低充填试样相比，高充填试样对围压的敏感性更强，当围压增大，高充填试样能量的增长幅度明显较大.试验结果为研究岩体失稳破坏机制提供了参考.更多还原

【Abstract】 Rock instability failure experiences the process of energy absorption, storage, dissipation and release. In this paper, uniaxial and triaxial compression tests on sandstone samples containing fillings are carried out, and the energy evolution of sandstone with fillings under different stress conditions are studied. Results show that before the stress reaches the peak value, the four samples store energy in the form of absorbing elastic strain energy, and dissipates energy in the form of releasing elastic strain energy after reaching the peak value. With the increase of confining pressure, the dissipation ratio of the sample with fillings increases gradually. The total energy, elastic strain energy and dissipated strain energy of all samples are proportional to the confining pressure strength. The higher the confining pressure is, the greater the energy is. Compared with the low filling sample, the high filling sample is more sensitive to the confining pressure. When the confining pressure increases, the energy growth range of the high filling sample accelerates obviously. The experimental results have provided references for studying the failure mechanism of rock.更多还原