Numerical simulation analysis of covering rock strata as mining steep-inclined coal seam under fault movement
The fault is one important factor for the stability of overburden strata caused by steeply inclined coal seam. The stress and displacement change of overburden strata caused by steeply-inclined coal seam mining activity under faulting was simulated by FLAC2D finite differential program on the basis of Zhaogezhuang mining example belonging to Kailuan Mining Group. From the results, the stress and displacement clouding image after mining became complex because of the fault, that is, a kind of weak structural plane. The stress concentration region concentrated around the goaf, and also around the fault plane. As the mining depth increases, the stress and displacement within the fault zone change significantly. This movement and deformation characteristic of overburden strata can provide theoretical basis for the similar mining condition.
fault steep-inclined coal seam numerical simulation overburden distortion
MA Feng-hai SUN Li LI Dun
College of Civil and Architectural Engineering, Dalian University, Dalian 116622, China
国际会议
河南焦作
英文
556-561
2011-06-18（万方平台首次上网日期，不代表论文的发表时间）