摘要
朱集煤矿1111(1)工作面以F29断层为北边界,F29断层落差35 m,倾角70°,断层切割上下含水层,为较大导水正断层。在布置采煤工作面时,需留设断层边界防水煤柱。根据淮南矿区经验,留设防水煤柱一般取经验值80～100 m,故1111(1)工作面布置至F29断层前100 m。根据科学计算,得出准确防水煤柱宽度为60 m,这样既能提供矿井安全回采的科学依据,又能减少压煤量,提高回采量。并可为今后其他采煤工作面留设防水煤柱提供参考。
The 1111(1) coalface of Zhuji Coal Mine is adjacent to the boundary of a fault which is named F29.The F29 fault throw 35m,dip Angle 70 °.It cuts the upper and lower aquifers,and be identified as a larger water conduction fault.That mean,it needs to leave waterproof pillar when arranging the coalface.In Huainan mining area,generally speaking,we use 80 ～ 100m as the empirical value of waterproof pillar.So,the 1111(1) coalface arranged to the position 100m before the F29 fault.Based on scientific formula,we have calculated out that the waterproof pillar just needs 60m.This can provides a scientific basis for the safety of coal cutting,and can enhances the output of coal as well.And it provides a reference for leaving the waterproof pillar of other coalfaces later.
出处
《地下水》
2012年第2期18-19,共2页
Ground water
关键词
采煤工作面
导水断层
防水煤柱
保护带
Coalface
water conduction fault
waterproof pillar and guard band
