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Comprehensive analysis of safe mining to heavy and steep coal seam under complex geophysics environment 被引量:3
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作者 王宁波 李立波 +1 位作者 来兴平 柴鑫 《Journal of Coal Science & Engineering(China)》 2008年第3期378-381,共4页
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 freque... 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. 展开更多
关键词 complex geophysics environment heavy-steep coal seam high-section-top- coal-caving(HSTCC) excavation disturbance zone(EDZ) dynamic destabilization
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