摘要
为保证矿井安全投产,针对麦垛山矿主采2#煤上部存在的强含水层问题,采用理论计算分析确定2#煤开采后导水裂隙带高度均大于30 m,直接开采将会威胁矿井安全;而通过对下部6#煤的导水裂隙带高度计算可知,6#煤开采后不会造成矿井突水,仅在断层附近对上部煤层存在局部破坏,数值实验直观表明,先采6#煤不会破坏上部煤层,上行开采是可行的。
In order to ensure mine safety production, according to the problem of existing strong aquifer above 2＂ main coal seam, theo- retical calculation and analysis are applied to determine the height of water flowing fractured zone which are all greater than 30 me after mining 2~ coal, direct mining will threaten the safety of coal mine. While the height calculation of water flowing fractured zone shows that 6# coal mining will not cause mine water inrush, there is only partial destruction to upper coal seam near the faults. Numerical ex- periment intuitively shows that 6＂ coal mining will not destroy the upper coal seam. Upward mininz is feasible.
出处
《煤矿安全》
CAS
北大核心
2014年第2期35-37,共3页
Safety in Coal Mines
关键词
上行开采
导水裂隙带
数值试验
含水层
突水
upward mining
water flowing fractured zone
numerical experiment
aguifer
water outburst
