采空区及煤柱下大采高工作面矿压显现规律

摘要

根据补连塔煤矿22303工作面7．0m大采高矿压观测，研究上覆采空区及走向煤柱下工作面矿压显现规律与支架荷载。研究结果表明由于上覆基岩赋存和受采动影响的不同，呈现了不同的矿压显现特征，当工作面上覆采空区时来压步距比上覆煤柱区小，动载系数、来压持续长度大于煤柱下，而上覆采空区及煤柱下对应工作面支架载荷相差不多，且远小于计算支架荷载。%Based on the mine pressure observation of large cutting height workface in 22303 face of Bulianta Mine, the paper researched the support load and mine pressure behavior of workfaces which under goal and pillar. The results show that the characteristics of strata behavior change with overlying strata and mining.