露天煤矿地下水电磁探测与类型判别
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摘要
为准确确定露天煤矿地下水分布与类型,根据不同赋存条件电磁差异,基于磁场强度与电阻率参数进行异常划分与类型判别。以新疆某露天煤矿为例,采用高精度磁法通过磁异常强度确定烧变岩边界,并采用高密度电法和瞬变电磁法通过电阻率圈定低阻异常区,结合异常响应差异分别推断地下水分布范围与赋存类型。地面钻探验证探测成果的准确性。结果表明:露天煤矿烧变岩水与砂岩裂隙水电磁响应差异明显,基于磁场强度与电阻率的双参数综合电磁法能准确圈定其分布范围,并判别其赋存类型。
In order to accurately detect the underground distribution of burning rock and fissure water in open pit coal mine, a comprehensive electromagnetic detection method based on magnetic field intensity and resistivity is proposed, because different occurrence conditions groundwater has electromagnetic difference. Taking an open-pit coal mine in Xinjiang as an example, the boundary of the burnt rock is determined by the intensity parameter of magnetic anomaly, the low resistivity area at different depths is delineated by resistivity method combined with high-density electrical method and transient electromagnetic method, the distribution of burning rock water and fissure water is deduced separately according to geological conditions. The accuracy of the detection results is verified by ground drilling. The results show that the electromagnetic response of groundwater in the burning rock and fissure development area of open pit coal mine is obviously different, and the distribution range can be accurately delineated based on the two parameter comprehensive electromagnetic method according to the magnetic field intensity and resistivity.
In order to accurately detect the underground distribution of burning rock and fissure water in open pit coal mine, a comprehensive electromagnetic detection method based on magnetic field intensity and resistivity is proposed, because different occurrence conditions groundwater has electromagnetic difference. Taking an open-pit coal mine in Xinjiang as an example, the boundary of the burnt rock is determined by the intensity parameter of magnetic anomaly, the low resistivity area at different depths is delineated by resistivity method combined with high-density electrical method and transient electromagnetic method, the distribution of burning rock water and fissure water is deduced separately according to geological conditions. The accuracy of the detection results is verified by ground drilling. The results show that the electromagnetic response of groundwater in the burning rock and fissure development area of open pit coal mine is obviously different, and the distribution range can be accurately delineated based on the two parameter comprehensive electromagnetic method according to the magnetic field intensity and resistivity.
引文
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[19]范立民,蒋泽泉.烧变岩地下水的形成及保水采煤新思路[J].煤炭工程,2006(4):40-41.
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[21]韩创业.火烧区积水对煤层突水控制作用的实践与研究[J].内蒙古煤炭经济,2016(10):101,110.
[22]李功强,张军,胡瑶,等.致密砂岩孔隙度-电阻率关系与地层因素计算方法研究[J].地球物理学进展,2016,31(2):695-700.LI G Q,ZHANG J,HU Y,et al.Relationship between porosity-resistivity and the methods of formation factor calculation in tight sandstone[J].Progress in Geophysics,2016,31(2):695-700.(in Chinese).
[2]张小亮,易万亿,杨庆坤,等.煤矿富水区高密度电阻率法勘察技术应用与研究[J].煤炭技术,2016,35(11):110-112.ZHANG X L,YI W Y,YANG Q K,et al.Application and research of high density resistivity method in rich water area of coal mine[J].Coal Technology,2016,35(11):110-112.(in Chinese).
[3]李文刚.瞬变电磁法在矿井防治水工作中的应用[J].中国煤炭,2015,41(12):36-39,52.LI W G.Application of transient electromagnetic method in water prevention and control work in mine[J].China Coal,2015,41(12):36-39,52.(in Chinese).
[4]刘岩波,郑建烽,韩玉雷.瞬变电磁法在探测煤矿积水区中的应用[J].煤矿安全,2013,44(10):143-145.LIU Y B,ZHENG J F,Hang Y L.Application of TEM in detecting water accumulated areas of coal mine[J].Safety in Coal Mines,2013,44(10):143-145.(in Chinese).
[5]曾方禄,李慕平,高建华.矿井音频电透视技术探查顶板砂岩水:以济三煤矿为例[J].煤田地质与勘探,2007(6):74-76,80.ZENG F L,LI M P,GAO J H.The voice frequency electric perspective technique for detecting top sand water:A case study at Jisan coal mine[J].Coal Geology&Exploration,2007(6):74-76,80.(in Chinese).
[6]张艳龙.瞬变电磁法与激发极化法在采空积水区探测中的应用[J].矿业安全与环保,2017,44(3):40-42,48.ZHANG Y L.Application of transient electromagnetic method and induced polarization method in gob water detection[J].Mining Safety&Environmental Protection,2017,44(3):40-42,48.(in Chinese).
[7]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 L,JIANG Z H,ZANG G J.Integrated interpretation method of TEM by differential attenuation of response inmined-out area with water[J].Progress in Geophysics,2017,32(4):1621-1627.(in Chinese).
[8]王贞海.近距离煤层上覆采空区积水音频电探测与治理技术[J].煤炭工程,2016,48(8):68-70.WANG Z H.Voice frequency electric perspective and treatment technology for goaf water in upper seam of close-distance coal seams[J].Coal Engineering,2016,48(8):68-70.(in Chinese).
[9]张池,王鹏飞.烧变岩及风化基岩层富水性探查[J].煤炭技术,2018,37(3):175-177.ZHANG C,WANG P F.Study on water-richness of burnt rock and weathered bedrock[J].Coal Technology,2018,37(3):175-177.(in Chinese).
[10]龙凡,韩天成.赤峰地区玄武岩地下水赋存类型及其地电特征[J].水文地质工程地质,2002(6):60-63.LONG F,HANG T C.Groundwater reservoir type of basalt area and its geoelectrical characteristics in Chifeng[J].Hydrogeology&Engineering Geology,2002(6):60-63.(in Chinese).
[11]王俊业.岩溶地下水的电测曲线类型及其富水性[J].地下水,1990(2):73-75.
[12]郝霁昊.灰岩地区裂隙水和溶洞水的激电曲线特征研究[J].地下水,2014,36(2):79-80.
[13]卢放,阎红霞,胡文广.阜平县变质岩地区基岩裂隙水的电性特征[J].南水北调与水利科技,2017,15(3):126-131.LU F,YAN H X,HU W G.Electrical properties of bedrock fissure water in metamorphic rock area of Fuping County[J].South-to-North Water Transfers and Water Science&Technology,2017,15(3):126-131.(in Chinese).
[14]卢放,阎红霞,胡文广.太行山缺水地区变质岩裂隙水水文地质特征及其电性响应:以阜平县为例[J].科学技术与工程,2016,16(14):18-22.LU F,YAN HX,HU WG.Hydrogeological properties and their electrical properties responses of metamorphic rock fissure water in water shortage area of Taihang:A case study in Fuping county[J].Science Technology and Engineering,2016,16(14):18-22.(in Chinese).
[15]于鹏,石广洋,徐进军,等.胜利露天煤矿防治水研究及综合治理[J].露天采矿技术,2017,32(7):67-70.YU P,SHI G Y,XU J J,et al.Study on water control and comprehensive treatment in Shengli Open-pit coal mine[J].Opencast Mining Technology,2017,32(7):67-70.(in Chinese).
[16]范立民,仵拨云,向茂西,等.我国西部保水采煤区受保护烧变岩含水层研究[J].煤炭科学技术,2016,44(8):1-6.FANG L M,WU B Y,XIANG M X,et al.Study on protective burnt rock aquifer in water preserved coal mining area of western China[J].Coal Science and Technology,2016,44(8):1-6.(in Chinese).
[17]张秀山.新疆煤田火烧区特征及其勘探灭火问题探讨[J].西北地质,2001(1):18-26.ZHANG X S.On the put out fire in coal field burning regions of Xinjiang[J].Northwestern Geology,2001(1):18-26.(in Chinese).
[18]吴超凡,邱占林,杨胜伦,等.火烧区下伏煤层工作面顶板富水性探测[J].煤炭技术,2016,35(3):137-139.WU C F,QIU Z L,YANG S L,et al.Transient electromagnetic detection of roof water abundance of initial mining working face[J].Coal Technology,2016,35(3):137-139.(in Chinese).
[19]范立民,蒋泽泉.烧变岩地下水的形成及保水采煤新思路[J].煤炭工程,2006(4):40-41.
[20]侯恩科,童仁剑,冯洁,等.烧变岩富水特征与采动水量损失预计[J].煤炭学报,2017,42(1):175-182.HOU E K,TONG R J,FENG J,et al.Water enrichment characteristics of burnt rock and prediction on water loss caused by coal mining[J].Journal of China Coal Society,2017,42(1):175-182.(in Chinese).
[21]韩创业.火烧区积水对煤层突水控制作用的实践与研究[J].内蒙古煤炭经济,2016(10):101,110.
[22]李功强,张军,胡瑶,等.致密砂岩孔隙度-电阻率关系与地层因素计算方法研究[J].地球物理学进展,2016,31(2):695-700.LI G Q,ZHANG J,HU Y,et al.Relationship between porosity-resistivity and the methods of formation factor calculation in tight sandstone[J].Progress in Geophysics,2016,31(2):695-700.(in Chinese).