单轴压力作用下岩石损伤演化特征研究  

A research on the characteristics of rock damage development under uniaxial compression

作　　者：刘冬梅[1] 龚永胜[1] 谢锦平[2] 

机构地区：[1]南方冶金学院,江西赣州341000 [2]赣南师范学院,江西赣州341000

出　　处：《江西有色金属》2000年第4期1-3,共3页Jiangxi Nonferrous Metals

基　　金：江西省自然基金资助项目!(975008)

摘　　要：采用显微观测法和双曝光全息干涉法研究了单轴压力作用下岩石损伤特征 ,得出了变质砂岩变形与损伤演化的关系。岩石损伤演化实际上是微裂纹扩展区的演化即岩石中微孔隙、微裂纹成核和扩展的过程 ,裂纹萌生演化的分形分布受岩石组成、结构以及初始缺陷的影响 ,裂纹的汇合贯通制约着岩石的损伤状态和非线性变形 。The characteristics of rock damage development under uniaxial compression was observed by using microscope and double-exposure holographic interferometry. The relationship between metamorphic rock deformation and its damage growth is presented. Factually rock damage means the domain of microcrack growth (DMG)and the process from the initiation to growth of microcrack in rock. The fractal properties are affected by the constitution and original defects in rock. The degree of rock damage and nonlinear deformation are related to the propagation and coalescence of cracks. The mechanics of rock fracture is chiefly tensional loss as well as part of shear fracture.

关 键 词：单轴压缩 岩石损伤测量 损伤力学 显微观测法 

分 类 号：P584[天文地球—岩石学] TD45[天文地球—地质学]