大采高孤岛综采工作面矿压显现实测研究

摘要

Stress strength ,stress pace and support force of roof in 3302 coal face of island with large mining height has been mastered by site practice measure , and rib fall , rear suspension and support living column shrinkage have also obtained by macro observation .Strata behavior results show that the adaptability of ZY -4000/17/37 hydrolic shield support is good and can meet the mining condition of 3302 island working face ,and that treating rib fall and floor heave is the key of mining .%以现场实测为手段掌握了李家庄煤矿3302大采高孤岛工作面顶板来压强度、来压步距和支架受力情况，并通过宏观观测了解了该工作面煤壁片帮、架后悬顶和支架活柱下缩量等情况。由矿压观测结果可知，ZY －4000／17／37型掩护式液压支架适应性较好，能够满足3302孤岛工作面开采条件，治理煤壁片帮和底臌是工作面开采的关键。