Analysis on activation laws caused by coal mining in fault footwall and its criterion  

作　　者：YU Wei-jian WANG Wei-jun WU Zhong-jian 

机构地区：[1]Hunan Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan411201,China [2]School of Energy and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China [3]Qujiang Coal Developing Co.,Ltd.,Fengcheng 331136,China

出　　处：《Journal of Coal Science & Engineering(China)》2012年第2期123-128,共6页煤炭学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （51104063, 51074071）; the Scientific Research Fund of Hunan Provincial Education Department （10C0665）; the Open Foundation of Htman Key Laboratory of Safe Mining Techniques of Coal Mines （200904）; the Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Htman Province

摘　　要：The system research aimed at activation laws caused by coal mining in fault footwall based on the rock strata me- chanics theory in this paper. According to the three-belt characteristics of overlying strata above mined-out area, the fault acti- vation effect was divided into the following three periods： the initial activation, the excessive activation and the ultimate activation. Corresponding activation criterion was also deduced by the mechanics theory. Results of engineering example and numerical analysis show that the activation criterion can reflect the activation laws of fault caused by coal mining.

关 键 词：fault activation footwall strata movement activation criterion 

分 类 号：TD82[矿业工程—煤矿开采] O657.4[矿业工程—矿山开采]