中文摘要：

为了研究煤岩材料的损伤演化过程,分别对煤和砂岩试样进行了轴向应变控制、定常环向应变控制、不同围压下的单轴压缩和三轴压缩试验研究,观察煤岩的实验损伤演化过程;对试验数据进行分析,结合煤样的变形损伤特征,基于损伤力学和热力学基本原理,推导并建立了煤岩非线性损伤演化方程和煤岩试样非线性损伤本构方程。通过试验结果验证了煤岩材料的非线性损伤理论的合理性,同时也丰富了煤岩损伤理论体系。

英文摘要：

In order to investigation into the damage evolution process of coal and rock,in this paper,we did a lot of uniaxial and triaxial compression experiments of coal and sandstone in different kinds of conditions such as axial strain control、steady hoop strain control and under different confining pressures.And observed coal and rock damage evolution process,the test data were analyzed.Based on the basic principle of damage mechanics and thermodynamics,the nonlinear damage constitutive equation and nonlinear damage evolution equation of coal and rock were established.Compared the experimental results with the theoretical results,the nonlinear damage results showed that the test curve accordance with theory,and the results will enrich the theoretical frame of the coal and rock damage theory.