大采高综采工作面护巷煤柱尺寸研究

Study on Chain Pillar Dimension of Fully-mechanized Mining Face with Large Mining-height

以晋煤集团寺河矿西井区W1301综采工作面回采为背景,采用数值模拟和现场监测的方法对工作面侧向护巷煤柱的合理宽度进行了分析。数值模拟结果表明,当煤柱宽度为25~30 m时,能够有效保持巷道围岩的稳定性。现场监测结果表明,工作面侧向支承压力的影响范围约为27 m,验证了现场工作面护巷煤柱宽度为30 m的合理性。

Taking the mining of W1301 fully-mechanized working face in the western of Sihe Coal Mine as background,analyzed the rational width of chain pillar by numberical simulation and field observation. Numberical simulation results show that,it can guarantee the stabilization of roadway surrounding rock when the width of chain pillar is 25 ~ 30 m. Field observation results show that,the influenced range of horizontal abutment pressure is about 27 m. The numberical simulation results verified the rationality of the field chain pillar width 30 m.