煤矿老窑积水巷道直流电法超前探测异常特征研究
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摘要
为了准确探查煤矿潜在的老窑积水巷道避免引发灾害性透水事故,根据直流电法超前探测原理和以往探测结果,采用统计的方法对已往验证的积水老窑直流电法超前探测的视电阻率异常特征进行了研究。结果表明:老窑积水巷道与电法探测方向不管正交或斜交,因电法的体积勘探效应无法区分;老窑积水巷道共同异常特征为1个单一下尖的低阻异常,宽度范围相对较小(3～5 m);当其异常幅值大于1倍的均方差时,一般对应老窑巷道积满水的情况(可作为预警条件);未积满水的老窑巷道,异常值相对较小,一般大于1/2的均方差;含导水裂隙破碎带常表现为大于1倍的均方差表现为低阻异常特征,但其异常范围常较宽,形态也不同。在实际应用中,使用该技术跟踪掘进工作面超前探测,已经成功预防了多次老窑透水事故。
In order to accurately detect water-accumulating roadway in abandoned of coal mines to avoid disastrous water accident,this paper is based on the principle and previous detection results of DC electric in-advance detection. The statistical method is used to study the anomalous characteristics of the apparent resistivity of the previously detection of goaf water.The results show that it is impossible to distinguish whether the water-accumulating roadway in abandoned of coal mines is orthogonal or oblique to the detection direction,due to the volumetric exploration effect of the electric method. The common anomaly feature is a single lower-point low-resistance anomaly with a relatively small width range(about 3 ～ 5 m). When the anomaly is greater than one-fold mean square error,it generally corresponds to the situation that the roadway is full of water(can be used as an early warning starting condition). In the roadway not fully filled with water,the outliers are relatively small,generally larger than half-fold mean square error. The water-conducting fractures often exhibit a low-resistance anomaly characterized by more than one-fold mean square error,but its anomaly range is often wider with different forms. In practice,this technology is used to track the heading face advanced detection of buried goaf water which has successfully prevented multiple accidents.
In order to accurately detect water-accumulating roadway in abandoned of coal mines to avoid disastrous water accident,this paper is based on the principle and previous detection results of DC electric in-advance detection. The statistical method is used to study the anomalous characteristics of the apparent resistivity of the previously detection of goaf water.The results show that it is impossible to distinguish whether the water-accumulating roadway in abandoned of coal mines is orthogonal or oblique to the detection direction,due to the volumetric exploration effect of the electric method. The common anomaly feature is a single lower-point low-resistance anomaly with a relatively small width range(about 3 ～ 5 m). When the anomaly is greater than one-fold mean square error,it generally corresponds to the situation that the roadway is full of water(can be used as an early warning starting condition). In the roadway not fully filled with water,the outliers are relatively small,generally larger than half-fold mean square error. The water-conducting fractures often exhibit a low-resistance anomaly characterized by more than one-fold mean square error,but its anomaly range is often wider with different forms. In practice,this technology is used to track the heading face advanced detection of buried goaf water which has successfully prevented multiple accidents.
引文
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[14]骆彬,张平松,胡雄武.矿井坑道音频电法超前探测模拟及其应用[J].中国煤炭,2018,44(5):27-31.LUO Bin,ZHANG Pingsong,HU Xiongwu.Simulation and application of audio electric advanced detection method in mine tunnel[J].China Coal,2018,44(5):27-31.
[15]殷国强,翟培合,秦鹏一,等.高密度二极三维直流电法超前探测研究[J].煤炭技术,2017,36(10):190-192.YIN Guoqiang,ZHAI Peihe,QIN Pengyi,et al.Study on advanced detection of high density DC diode[J].Coal Technology,2017,36(10):190-192.
[16]石学锋.新疆库车某矿矿井直流电法超前探测报告[R].西安:煤炭科学研究总院西安研究院,2010.
[17]解海军,蒋齐平,王鹏.中国中煤能源股份有限公司平朔分公司矿井直流电法超前探测报告[R].西安:煤炭科学研究总院西安研究院,2010.
[2]王益.王家岭碟子沟井下物探超前探测报告[R].西安:煤炭科学研究总院西安研究院,2010.
[3]韩德品,赵镨,李丹.矿井物探技术应用现状与发展展望[J].地球物理学进展,2009,24(5):1839-1849.HAN Depin,ZHAO Pu,LI Dan.Application status and development prospects of mine geophysical exploration technology[J].Progress in Geophysics,2009,24(5):1839-1849.
[4]程久龙,李飞,彭苏萍,等.矿井巷道地球物理方法超前探测研究进展与展望[J].煤炭学报,2014,39(8):1742-1750.CHENG Jiulong,LI Fei,PENG Suping,et al.Research progress and development direction on advanced detection in mine roadway working face using geophysical methods[J].Journal of China Coal Society,2014,39(8):1742-1750.
[5]许新刚,岳建华,夏书兵,等.多层采空积水区瞬变电磁响应研究[J].中国煤炭地质,2017,29(4):73-77.XU Xingang,YUE Jianhua,XIA Shubing,et al.A study on multilevel gob ponding area transient electromagnetic response[J].Coal Geology of China,2017,29(4):73-77.
[6]刘恋,姜志海,臧公瑾.积水采空区瞬变电磁响应微分解释方法[J].地球物理学进展,2017,32(4):1621-1627.LIU Lian,JIANG Zhihai,ZANG gongjin.Integrated interpretation method of TEM by differential attenuation of response in minedout area with water[J].Progress in Geophysics,2017,32(4):1621-1627.
[7]韩德品,李丹,程久龙,等.超前探测灾害性含导水地质构造的直流电法方法[J].煤炭学报,2010,35(4):635-639.HAN Depin,LI Dan,CHENG Jiulong,et al.DC method of advanced detecting disastrous water-conducting or water-bearing geological structures along same layer[J].Journal of China Coal Society,2010,35(4):635-639.
[8]马炳镇,李貅.矿井直流电法超前探中巷道影响的数值模拟[J].煤田地质勘探,2013,41(1):78-81.MA Bingzhen,LI Xiu.Roadway influences on advanced DCdetection in underground mine[J].Coal Geology and Exploration,2013,41(1):78-81.
[9]鲁晶津,吴小平.巷道直流电阻率法超前探测三维数值模拟[J].煤田地质与勘探,2013,41(6):83-86.LU Jingjin,WU Xiaoping.3D numerical modeling of tunnel DC resistivity for in-advance detection[J].Coal Geology and Exploration,2013,41(6):83-86.
[10]赵永贵,刘浩,孙宇,等.隧道地质超前预报研究进展[J].地球物理学进展,2003,18(9):460-462.ZHAO Yonggui,LIU Hao,SUN Yu,et al.Research progress in tunnel geological prediction[J].Progress in Geophysics,2003,18(9):460-462.
[11]刘坦.煤矿采空区及其含水性综合物探技术[J].煤矿安全,2016,47(7):73-75.LIU Tan.Geophysical prospecting technology for coal mine gobs and their aquosity[J].Safety in Coal Mines,2016,47(7):73-75.
[12]范涛,鲁晶津,王冰纯,等.瞬变电磁虚拟波场反演法在井下超前探测中的应用[J].煤炭科学技术,2017,45(10):8-15,47.FAN Tao,LU Jingjin,WANG Bingchun,et al.Inversion method of transient electromagnetic virtual wave-field applied to advance detection in underground mine[J].Coal Science and Technology,2017,45(10):8-15,47.
[13]刘盛东,郭立全.MSP技术及其煤矿巷道小构造探测中的应用[J].安徽理工大学学报:自然科学版,2007,27(S1):22-25.LIU Shengdong,GUO Liquan.MSP Technology and the application of detecting small geological structure in coal mine lane way[J].Journal of Anhui University of Science and Technology:Natural Science Edition,2007,27(S1):22-25.
[14]骆彬,张平松,胡雄武.矿井坑道音频电法超前探测模拟及其应用[J].中国煤炭,2018,44(5):27-31.LUO Bin,ZHANG Pingsong,HU Xiongwu.Simulation and application of audio electric advanced detection method in mine tunnel[J].China Coal,2018,44(5):27-31.
[15]殷国强,翟培合,秦鹏一,等.高密度二极三维直流电法超前探测研究[J].煤炭技术,2017,36(10):190-192.YIN Guoqiang,ZHAI Peihe,QIN Pengyi,et al.Study on advanced detection of high density DC diode[J].Coal Technology,2017,36(10):190-192.
[16]石学锋.新疆库车某矿矿井直流电法超前探测报告[R].西安:煤炭科学研究总院西安研究院,2010.
[17]解海军,蒋齐平,王鹏.中国中煤能源股份有限公司平朔分公司矿井直流电法超前探测报告[R].西安:煤炭科学研究总院西安研究院,2010.