极近距离下位煤层回采巷道优化布置研究

Determining Reasonable Width of Chain Pillar of Deep Coal Seams Roadway Driving along Next Goaf

采用数值模拟及现场试验相结合的方法,确定了极近距离下部煤层回采巷道的合理位置,即通过数值模拟得出了巷道围岩变形量、两帮垂直应力、塑性区分布情况及对煤层群开采巷道布置合理位置的理论计算。

By using the combination of numerical simulation and field test,there comes the determination for the reasonable position of the very close quarter of coal seams under goaf.The theoretical calculation of surrounding rock deformation,two side vertical stress,the space arrangement relationship between plastic area distribution and work gallery,the reasonable position of coal mining roadway layout is obtained by numerical simulation.