沿沟煤矿25812风巷塌陷事故分析及修理措施

摘要

Collapse accident occurred nearby headstock of airway while shield support going at 20m of 25812 Working Face in Yangou Colliery.Forepoling bar supporting was used to repair from outside to inside after the stability of collapse area,which restored the ventilation system of mining face and ensured the normal mining.%当沿沟煤矿25812工作面掩护支架推至20m处时,在风巷架头处附近发生塌陷事故,在塌陷区稳定以后采用前探梁支护方式,由外向内进行修理,恢复采煤工作面的通风系统,使工作面得以正常进行回采。