不同成因结构面循环剪切试验研究  

Experimental Study of Different Structural Planes with Different Mechanical Causes under Cyclic Shear Loading

作　　者：许江[1,2] 瞿佳美 刘义鑫[1,2] XU Jiang;QU Jiamei;LIU Yixin(State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China;State and Local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [2]重庆大学复杂煤气层瓦斯抽采国家地方联合工程实验室,重庆400044

出　　处：《矿业研究与开发》2018年第11期79-84,共6页Mining Research and Development

基　　金：国家自然科学基金项目(51474040)

摘　　要：为研究不同力学成因的结构面在循环剪切荷载作用下的强度、变形和三维形貌演化差异,用倒模法复制劈裂结构面和剪切结构面相似材料试件,进行不同法向应力下循环剪切试验和三维扫描。结果表明:力学成因的差异导致结构面具有不同的表面形貌,不同类型结构面在循环剪切中的破坏模式存在差异,导致两种类型结构面在不同法向应力下循环剪切中的剪应力和法向位移演化规律不同。To study the strength,deformation and three-dimensional morphology evolution of structural planes with different mechanical causes under cyclic shear loading,similar material specimens of the splitting and shearing structural planes were duplicated by inverted mode method.Cyclic shear tests and three dimensional scanning under different normal stresses were carried out.The results showed that the difference of mechanical causes led to different surface appearances of the structural planes,and the failure modes of the different types of structural planes in the cyclic shear process existed difference,which led to the diversities in evolution laws of the shear stress and the normal displacement of the two types of structural planes in the cyclic shear process under different normal stresses.

关 键 词：循环剪切 劈裂结构面 剪切结构面 法向应力 

分 类 号：X935[环境科学与工程—安全科学] TD315.1[矿业工程—矿井建设]