CAJ | 학술논문

为了预防生产矿井的煤与瓦斯突出，利用保护层开采过程中的被保护层的卸压作用对卸压瓦斯进行强化抽采，使被保护层由高瓦斯突出危险煤层变为低瓦斯无突出危险煤层，实现对煤与瓦斯突出煤层的消突。应用数值模拟软件进行模拟，对下保护层开采后顶板覆岩的卸压程度、煤岩层移动变形、岩体裂隙发育和煤层卸压瓦斯抽采方法进行系统的研究。结果表明，被保护层的膨胀变形使得被保护范围内的围岩体内部形成大量孔道和裂隙，煤层的透气性增大。被保护层地压减小，弹性潜能得到缓慢释放。开采保护层结合采取相应的瓦斯抽放措施，对于防治深部煤层瓦斯突出和实现煤矿安全生产具有重要的意义。
위료예방생산광정적매여와사돌출，이용보호층개채과정중적피보호층적사압작용대사압와사진행강화추채，사피보호층유고와사돌출위험매층변위저와사무돌출위험매층，실현대매여와사돌출매층적소돌。응용수치모의연건진행모의，대하보호층개채후정판복암적사압정도、매암층이동변형、암체렬극발육화매층사압와사추채방법진행계통적연구。결과표명，피보호층적팽창변형사득피보호범위내적위암체내부형성대량공도화렬극，매층적투기성증대。피보호층지압감소，탄성잠능득도완만석방。개채보호층결합채취상응적와사추방조시，대우방치심부매층와사돌출화실현매광안전생산구유중요적의의。
With the increase of mine mining depth,the dangerous gas mine is outstanding increasingly,and the risk factors affecting coal seam mining is becoming more and more complex.Protective layer mining is widely used in the currently regional technical measures to prevent coal and gas outburst,and many domestic coal mines have adopted mining protective layer to prevent the mine coal and gas outburst,and to realize the coal and gas outburst coal seam outburst elimination.In the protective layer,under the influence of working face mining stope,overburden will have corresponding deformation.The original stress state balance will be destroyed, leading to the permeability of coal and rock.Then,the intensity and gas pressure will be changed.This paper applies the numerical simulation software to simulate,the protective layer of roof strata after mining under unloading,coal strata movement deformation and fracture of rock mass and coal seam gas extraction methods for pressure relief system research. Mining protective layer is combined with the corresponding gas drainage measures for prevention and treatment of deep coal seam gas outburst,and the realization of coal mine safety production is very important.