采动影响下巷道变形机理与破坏模式  

Roadway deformation mechanism and failure model under the influence of mining

作　　者：赵海军[1] 马凤山[1] 丁德民[1] 张亚民[1] 

机构地区：[1]中国科学院地质与地球物理研究所工程地质力学重点实验室,北京100029

出　　处：《煤炭学报》2009年第5期599-604,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(40702048);中国科学院知识创新工程重要方向性项目(KZCX2-YW-113)

摘　　要：通过对甘肃金川二矿地下开采后应力场的分布研究,指出巷道变形、破坏与最大主压应力场的分布具有良好的对应关系,其变形破坏特征在不同阶段、不同部位有着一定的相似性和渐变性,并且给出了巷道变形、破坏的模式和分布特征,合理解释了深部巷道围岩的变形特征,阐明了破坏的机理.Based on the studies of the features of stress filed in Jinchuan No. 2 mining, Gansu Province, pointed out the roadway deformation, damage and the maximum principal stress distribution field has a good relationship, and deformation and failure characteristics has a certain similarity and changed gradually in different sites at differ- ent stages. Finally, the roadway deformation and failure models were put forward, and their distribution characteristics were also given, which reasonably explained the deep roadway deformation features, clarified the mechanism of the failure, and proved to be certain guidance for the roadway excavation and support.

关 键 词：金川镍矿 巷道变形破坏 应变能密度 能量释放 

分 类 号：TD322.4[矿业工程—矿井建设]