摘要
针对平朔煤炭工业公司安家岭井工矿4号和9号煤层联合开采的特点,利用相似材料模拟和数值模拟两种手段研究了9号煤层开采对4号煤层工作面巷道的采动影响规律,以及在不同煤柱尺寸下9号煤层工作面推进过程中,4号煤层工作面巷道周围应力变化规律及巷道变形规律.同时优化煤柱尺寸,使4号煤层工作面巷道处于安全的采动影响范围之内.
Based on characteristic of the associated mining No. 4 and No. 9 coal seam in Anjialing Coal Mine, Pingshuo Coal Industry Co. , the mining impact pattern was studied by using numerical simulation and examination. The stress distribution and deformation of the tunnel of No. 4 coal seam were obtained, when the working face of No. 9 coal seam moved under the different size coal pillar. Meantime, the reasonable coal pillar size was also optimized, in order that the tunnel of No. 4 coal seam was on firm ground
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2006年第4期425-428,共4页
Journal of China Coal Society
关键词
多煤层开采
采动影响
煤柱
mutil-coal seam mining
mining impact
coal pillar
