Experimental study on the mechanisms of fault reactivation and coal bumps induced by mining  

作　　者：Yao-Dong JIANG Tao WANG Yi-Xin ZHAO Wen-Jie WANG 

机构地区：[1]State Key Lab of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China [2]School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China [3]Faculty of Resources and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China [4]School of Civil Engineering, Tianjin Cheng]ian University, Tianjin 300384, China

出　　处：《Journal of Coal Science & Engineering(China)》2013年第4期507-513,共7页煤炭学报（英文版）

基　　金：Supported by the Major State Basic Research Development Program Fund （2010CB226801）; the National Natural Science Foundation of China （50704034）; the State Key Laboratory of Coal Resources and Safe Mining Open Research Fund （SKLCRSM11KFB08）

摘　　要：Experiments simulating the effect of coal mine stopping through a fault zone were designed based on a working face of the Qianqiu coal mine in Yima, China. Through simulation of the physical process of fault reactivation and coal bumps, the displacement of the surrounding strata and evolution characteristics of fault stress under the effect of mining were studied. The mechanism of fault reactivation induced by coal mining was analyzed. The results show that shortly before fault reactiva- tion, the normal stress and shear stress increased rapidly and the risk of a fault slip occurring was also increased. The fault reac- tivation, caused by the mining activity, occurred when the working face was 25-35 m from the fault along the hanging wall. The influence of mining increased the possibility of fault reactivation, while the local failure of the bearing capacity of the working face was the direct cause of the fault slip. Our results indicate that the influence of fault slip on the coal of the working face had a transient impact and acted as a loading-unloading function.

关 键 词：coal bumps fault reactivation digital speckle similar simulation experiment 

分 类 号：TD82[矿业工程—煤矿开采] TD823.83[矿业工程—矿山开采]