综合物探的奥陶系灰岩突水预警技术
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摘要
为克服单一物探手段的局限,更准确地预测奥陶系灰岩突水风险,新安煤矿13151工作面采用瞬变电磁、直流电法、槽波地震和无线电波坑透等4种手段进行了综合物探.经比对物探结果,并结合地质与水文地质资料分析,4种物探异常区的重叠区域奥陶系灰岩水向上导升,低阻区条带分布,存在突水危险;煤厚变薄,可能受剪切滑动构造影响;槽波波速1 800 m/s以上,地应力(矿压)集中,利于围岩破坏.多种物探异常区的重叠区域的突水风险最大,是工作面防治水工作的重点.实例证明,综合物探可以弥补单一物探方法之不足,有效指导钻探验证、底板注浆及突水治理工作.
In order to overcome the limitations of a single geophysical method,and to predict the risk of Ordovician water inrush more accurately,4 geophysical exploration means(transient electromagnetic method(TEM),DC method,in-seam seismic survey(ISS) and electric-magnetic pit-conveying) were used in 13151 working face in a Xin'an coal mine.Geophysical exploration results show that the Ordovician limestone water rose up in a low resistivity zone with shortage effective thickness of aquiclude; that the thin seam area could be affected by a shear sliding structure; that the ground stress(mine pressure) concentrated in a high wave velocity area(more than 2300 m/s) in which the surrounding rock was easily destructed.The overlapping region of an abnormal area has a high risk for water inrush,where is the key of water controlling in a mining face.
In order to overcome the limitations of a single geophysical method,and to predict the risk of Ordovician water inrush more accurately,4 geophysical exploration means(transient electromagnetic method(TEM),DC method,in-seam seismic survey(ISS) and electric-magnetic pit-conveying) were used in 13151 working face in a Xin'an coal mine.Geophysical exploration results show that the Ordovician limestone water rose up in a low resistivity zone with shortage effective thickness of aquiclude; that the thin seam area could be affected by a shear sliding structure; that the ground stress(mine pressure) concentrated in a high wave velocity area(more than 2300 m/s) in which the surrounding rock was easily destructed.The overlapping region of an abnormal area has a high risk for water inrush,where is the key of water controlling in a mining face.
引文
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[2]于景邨,胡兵,刘振庆,等.矿井瞬变电磁探测技术的应用[J].物探与化探,2011,35(4):532-535.
[3]罗平平,范波,李松营.井下瞬变电磁法在底板富水异常区探测中的应用[J].河南理工大学学报:自然科学版,2011,30(1):27-33.
[4]杨振威,吕庆田,凌标灿,等.瞬变电磁法在探测底板赋水性中的应用[J].辽宁工程技术大学学报:自然科学版,2011,30(4):518-521.
[5]刘爱兰,李绍臣,丁鑫品.YDZ(A)型直流电法仪在煤层底板含(导)水构造探测中的应用[J].煤炭工程,2012(1):56-58.
[6]李书杰,胡宏涛,丁公明.直流电法物探技术在金花煤矿的应用[J].中州煤炭,2010,17(3):62-63.
[7]王伟,高星,李松营,等.槽波层析成像方法在煤田勘探中的应用-以河南义马矿区为例[J].地球物理学报,2012,55(3):1054-1062.
[8]刘天放,潘冬明,李德春,等.槽波地震勘探[M].北京:中国矿业大学出版社,1994.
[9]刘树才,岳建华,刘志新.煤矿水文物探技术与应用[M].徐州:中国矿业大学出版社,2006.
[10]舒社会.无线电波坑透技术在裴沟煤矿的应用[J].中州煤炭,2011,18(12):75-76.
[11]高荣斌,贺志强,来争武,等.豫西新安煤田煤层厚度变化规律及其控制因素[J].煤田地质与勘探,2011,39(4):13-15,19.
[12]李松营.矿井综合物探技术在封堵特大型突水中的应用[J].煤炭科学技术,2011,39(11):23-26.
[13]陈寒秋,孙士华,回胜利,等.基于井下复合物探技术的煤层底板富水异常区探查[J].河南理工大学学报:自然科学版,2011,30(2):149-154.
[14]李松营.华兴公司煤矿特大型突水治理方案优化[J].河南理工大学学报:自然科学版,2010,29(5):572-575.
[15]虎维岳,尹尚先.采煤工作面底板突水灾害发生的采掘扰动力学机制[J].岩石力学与工程学报,2010,29(5):3344-3349.
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