Analysis of faults stability with dynamic phenomena in the mice based on slide criterion and in-situ stress measurement  

作　　者：宋卫华 王宇峰 王新华 

机构地区：[1]College of Resource and Environment Engineering,Liaoning Technical University,Fuxin 123000,China [2]Beijing Haohua Energy Resource Co.,Ltd.,Beijing 102300,China

出　　处：《Journal of Coal Science & Engineering(China)》2008年第4期640-643,共4页煤炭学报（英文版）

基　　金：the Project of China National"973"Program(2005CB221501);National Natural Science Foundation of China(50474010);Research Fund for the Doctoral Program of Higher Education(20040147005)

摘　　要：For the study on the relationshl＇p between the dynamic phenomena in the mining such as mine earthquakes, outburst and faults slide, firstly, double shear friction experiments of sandstone were made, and its slide criterion was suggested considering the viewing of engineering. Secondly, in order to study the stability of underground rock and zone of tectonic stress field, based on the analysis on distribution characteristic of initial rock stress measurements, the geology structural model was built and tectonic stress field was made a back-analysis by applying finite element method. The calculating results fit with the analysis result of earthquakes mechanism and the distribution characteristic of the measurements. The high stress regional centers station locates discontinuous zone of I level faults and is corresponding to underground earthquakes scene. From then it is certain that tectonic stress is the major origin and necessary condition of mine earthquakes. The instability slide of the faults is the main manifest and the mining activity is the leading factor. Beipiao fault has a dominate effect on other sub faults and tectonic stress area and is dynamical fountain of dynamic phenomena in the Beipiao Mines.For the study on the relationship between the dynamic phenomena in the min- ing such as mine earthquakes,outburst and faults slide,firstly,double shear friction ex- periments of sandstone were made,and its slide criterion was suggested considering the viewing of engineering.Secondly,in order to study the stability of underground rock and zone of tectonic stress field,based on the analysis on distribution characteristic of initial rock stress measurements,the geology structural model was built and tectonic stress field was made a back-analysis by applying finite element method.The calculating results fit with the analysis result of earthquakes mechanism and the distribution characteristic of the measurements.The high stress regional centers station locates discontinuous zone of I level faults and is corresponding to underground earthquakes scene.From then it is cer- tain that tectonic stress is the major origin and necessary condition of mine earthquakes. The instability slide of the faults is the main manifest and the mining activity is the leading factor.Beipiao fault has a dominate effect on other sub faults and tectonic stress area and is dynamical fountain of dynamic phenomena in the Beipiao Mines.

关 键 词：dynamic phenomena in the mine double shear friction experiment tectonic stress field faults slide geo-dynamic division 

分 类 号：TD326[矿业工程—矿井建设]