特厚煤层综放开采停采煤柱优化的研究

Study on Optimization of End-mining Coal Pillar in Top-coal Caving Mining of Extremely Thick Coal Seam

综放工作面停采煤柱的宽度影响着煤炭资源回收及盘区大巷的稳定性,以塔山煤矿8110综放工作面为工程背景,通过超前支承压力极限平衡理论计算,FLAC^(3D)数值模拟分析,结合现场实测的分析,对综放工作面停采煤柱的宽度进行优化,在保证盘区大巷稳定的前提下,提高煤炭资源回收率。

The width of end-mining coal pillar affects coal recovery rate and the stability of pannel roadway in fully mechanized caving. A case in the Tashan coal mine 8110 fully mechanized caving face,through the theory of limit equilibrium of abutment pressure calculation, FLAC3Dnumerical simulation analysis, combined with the field measurement,optimize the width of end-mining coal pillar in top-coal caving mining face.Under the premise of ensuring stability of roadway panel, improved the recovery rate of coal resources.