贵州煤矿区大、中型断层对瓦斯赋存的影响
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摘要
为探明贵州煤矿区大、中型断层对瓦斯赋存的影响规律,研究了贵州典型矿井同一煤层埋深相近情况下大、中型断层对附近100 m范围内瓦斯含量的影响情况。研究结果表明:距大、中型封闭性断层100 m范围内,断层使瓦斯含量平均增加42%,距断层越近,断层落差越大,断层对瓦斯含量的影响越明显。开放性断层使瓦斯含量平均降低31%,多半断层可使瓦斯含量降低50%以上。复合断层对附近瓦斯含量的影响较为复杂,对同一钻孔不同煤层或受同一断层控制的不同钻孔的影响差别很大。
In order to get the influence rule of large and medium faults on gas occurrence in coal mines of Guizhou province,the influences of large and medium faults on their nearby gas content within the scope of 100 m in same coal seam and similar buried depth in typical mines of Guizhou province were studied.The results showed that gas content nearby large and medium closed faults within the scope of 100 m increased by an average of 42%,then the closer to the faults and the larger the fault throw was,the more obvious influences of faults on the gas content.Open faults made the nearby gas content decrease by an average of 31%,and the gas content mostly decreased by more than 50%.The influences of compound faults on the nearby gas content were very complex,the influences on the gas content of same borehole in different coal seams or different boreholes controlled by the same compound fault were very different.
In order to get the influence rule of large and medium faults on gas occurrence in coal mines of Guizhou province,the influences of large and medium faults on their nearby gas content within the scope of 100 m in same coal seam and similar buried depth in typical mines of Guizhou province were studied.The results showed that gas content nearby large and medium closed faults within the scope of 100 m increased by an average of 42%,then the closer to the faults and the larger the fault throw was,the more obvious influences of faults on the gas content.Open faults made the nearby gas content decrease by an average of 31%,and the gas content mostly decreased by more than 50%.The influences of compound faults on the nearby gas content were very complex,the influences on the gas content of same borehole in different coal seams or different boreholes controlled by the same compound fault were very different.
引文
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[2]周世宁,林柏泉.煤层瓦斯赋存与流动理论[M].北京:煤炭工业出版社,1999
[3]俞启香.矿井瓦斯防治[M].徐州:中国矿业大学出版社,1992
[4]张志鹏,程远平,刘海波等.崔庙煤矿瓦斯赋存主要影响因素及突出危险性分析[J].煤矿安全,2012(3)
[5]王猛,朱炎铭,王怀勐.唐山矿瓦斯赋存的地质控制因素研究[J].中国煤炭,2012(3)
[6]舒龙勇,程远平,王亮等.地质因素对煤层瓦斯赋存影响的研究[J].中国安全科学学报,2011(2)
[7]程远平,俞启香.中国煤矿区域性瓦斯治理技术的发展[J].采矿与安全工程学报,2007(4)
[8]Shu Ma,Qingsong Li,Zhenli Han,et al.The characteristics of abnormal gas emission in tunneling through the small fault groups of Yizhong coal mine[J].Geosystem Engineering,2016(2)
[9]魏国营,姚念岗.断层带煤体瓦斯地质特征与瓦斯突出的关联[J].辽宁工程技术大学学报(自然科学版),2012(5)
[10]杨治国,王恩营,李中州.断层对煤层瓦斯赋存的控制作用[J].煤炭科学技术,2014(6)
[11]贾天让,王蔚,闫江伟等.贵州省煤矿瓦斯赋存构造控制规律与分带划分[J].地学前缘,2014(6)
[12]范启炜,王魁军,曹林.我国煤矿瓦斯灾害事故频发的原因分析[J].中国煤炭,2003(7)
[13]刘新荣,鲜学福.煤层瓦斯与煤层厚度及其变化关系的测试[J].煤炭科学技术,2004(8)
[14]马曙,王永明,颜智等,贵州省煤矿区瓦斯分布影响因素分析[J].煤矿开采,2014(4)
[15]滕春凯,白武明,王新华.用有限元方法研究含摩擦多断层周围的应力场[J].地球物理学报,1992(4)
[16]张维峰.杨柳煤矿瓦斯赋存规律及地质因素探讨[J].中国煤炭,2012(11)
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