Comprehensive analysis of safe mining to heavy and steep coal seam under complex geophysics environment  

作　　者：王宁波 李立波 来兴平 柴鑫 

机构地区：[1]School of Energy and Resource,Xi'an University of Science and Technology,Xi'an 710054,China [2]Key Laboratory of Western Mine & Hazard Prevention,China Ministry of Education,Xi'an 710054,China [3]Shenhua Xinjiang Energy Co.,Ltd.,Wulumuqi 830027,China

出　　处：《Journal of Coal Science & Engineering(China)》2008年第3期378-381,共4页煤炭学报（英文版）

基　　金：the National Natural Science Foundation of China(10402033,10772144)

摘　　要：In virtue of effect of N-S intensive ground stress and mining disturbance to +579E2EB_(1+2) mining site at Weihuliang Mine,the dip angle and section height is 65° and 52 m,respectively,the collapses happed frequently during mining.Firstly,mining condi- tions,spatial structure and parameters were investigated.Then physical simulation and dynamic numerical tracing and elaborate simulation relating roof and top-coal were ap- plied based on 2D-Block Program and quantitative regularity of stress at variable depths had been estimated.Furthermore,it was manifested that effective measures,i.e.,fast mining,control symmetrical top-coal-caving at dip and strike directions,optimizing ventila- tion system,active-stereo preventing gas were performed successfully in mining practice. Ultimately,the derived dynamic hazard were prevented so as to safety mining.In virtue of effect of N-S intensive ground stress and mining disturbance to ＋579E2EB1＋2 mining site at Weihuliang Mine, the dip angle and section height is 65° and 52 m, respectively, the collapses happed frequently during mining. Firstly, mining conditions, spatial structure and parameters were investigated. Then physical simulation and dynamic numerical tracing and elaborate simulation relating roof and top-coal were applied based on 2D-Block Program and quantitative regularity of stress at variable depths had been estimated. Furthermore, it was manifested that effective measures, i.e., fast mining, control symmetrical top-coal-caving at dip and strike directions, optimizing ventilation system, active-stereo preventing gas were performed successfully in mining practice. Ultimately, the derived dynamic hazard were prevented so as to safety mining.

关 键 词：complex geophysics environment heavy-steep coal seam high-section-top- coal-caving（HSTCC） excavation disturbance zone（EDZ） dynamic destabilization 

分 类 号：TD823[矿业工程—煤矿开采]