摘要
掘进 1 8 m长的疏水巷道 ,使透入 31 40 4回采面的涌水流入 31 40 2回采面的采空区 ,降低了水压 ,保证了该回采面的正常生产 ,并减少了下分层开采时突然涌水的危险 ,增加了安全性与可靠性。
Dredging water tunnel long 18m is diged, water flush of 31404 breakage face flowed into workedout section of 31402 breakage face, water pressure reducted, proper production gained guarantee at the breakage face, and risk of water flush reducted when next branch seam is mined, safety factor and reliability inceased.
关键词
涌水事故
安全性
可靠性
煤矿
回采工作面
Water flush accident Dredging water and reducting pressure Safety factor Reliability
