花岗岩地区浅部地下水井位的快速确定
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摘要
文章探讨在花岗岩地区地下水井位的快速定位问题,结合工程实践,采用三极电阻率测深法和天然电场选频法开展综合探测研究。首先实施三极电阻率测深剖面工作,对采集结果进行二维有限元反演研究,获得二维测深断面上低阻导电体的分布规律;在测深剖面上进一步开展天然电场选频法剖面勘探工作,得到低阻含水构造的水平精确位置,并进一步开展选频测深法的实践。后期的成井结果表明:三极电测深勘探成果的剖面异常比较直观,选频法则在异常体的地表水平定位方面比较精确,施工非常方便,两种方法相结合对地下水进行综合勘探是一种行之有效的办法。
The main purpose of this paper is to rapidly prospect shallow groundwater by using a three-pole resistivity sounding device and the frequency selection method of natural electric field in a granite area,where groundwater is relatively poor. At first,on the basis of data of three-pole resistivity sounding,the 2D finite element inversion was studied,and the distribution of the low resistivity conductive bodies on 2D depth sounding section was obtained. Secondly,the frequency selection method of natural electric field was carriout on the same sections and the accurate horizontal position of the low resistivity water bearing structure was obtained. Thirdly,the sounding of the frequency selection method was used to determine the depth of the abnormal body. Subsequent drilling results show that the anomaly section of three-pole sounding is very intuitive,and the frequency selection method is a good method to determine the accurate horizontal position of the anomalous body and it is very simple in field work. The combination of the two methods is an effective way to explore groundwater in granite areas.
The main purpose of this paper is to rapidly prospect shallow groundwater by using a three-pole resistivity sounding device and the frequency selection method of natural electric field in a granite area,where groundwater is relatively poor. At first,on the basis of data of three-pole resistivity sounding,the 2D finite element inversion was studied,and the distribution of the low resistivity conductive bodies on 2D depth sounding section was obtained. Secondly,the frequency selection method of natural electric field was carriout on the same sections and the accurate horizontal position of the low resistivity water bearing structure was obtained. Thirdly,the sounding of the frequency selection method was used to determine the depth of the abnormal body. Subsequent drilling results show that the anomaly section of three-pole sounding is very intuitive,and the frequency selection method is a good method to determine the accurate horizontal position of the anomalous body and it is very simple in field work. The combination of the two methods is an effective way to explore groundwater in granite areas.
引文
[1]黄道顺.花岗岩裂隙水的赋存特征及找水要点[J].矿产保护与利用,2005,25(4):51-54.[HUANG D S.Occurrence characteristics of granite crevice-water and key to discover water[J].Conservation and Utilization of Mineral Resources,2005,25(4):51-54.(in Chinese)]
[2]石云峰,李寻,裴妙荣,等.花岗岩裂隙中溶质运移试验研究[J].水资源与水工程学报,2016,27(1):222-226.[SHI Y F,LI X,PEI M R,et al.Experiment on solute transport in fracture of granite rock[J].Journal of Water Resources&Water Engineering,2016,27(2):222-226.(in Chinese)]
[3]M R Mahmoudzadeh,A P Francés,M Lubczynski,et al.Using ground penetrating radar to investigate the water table depth in weathered granites-Sardon case study,Spain[J].Journal of Applied Geophysics,2012,79(1):17-26.
[4]段佳松.浅层地震折射波法配合电测深法在花岗岩地区找水[J].地质与勘探,1999,35(3):46-48.[DUAN J S.Combination of shallow refraction seismic survey with electrical sounding method used for water research in the granite-covered area[J].Geology and Prospecting,1999,35(3):46-48.(in Chinese)]
[5]赵广涛.在花岗岩区找寻地下水源应着重注意的几个问题——以青岛地区为例[J].海洋湖沼通报,1990,12(4):31-36.[ZHAO G T.Criterions in the survey of ground water source at granite area[J].Transactions of Oceanology and Limnology,1990,12(4):31-36.(in Chinese)]
[6]乔喜祥.黑龙江省及呼伦贝尔盟花岗岩裂隙水类型及其赋存规律[J].勘察科学技术,1988,6(4):5-8.[QIAO X X.Types and occurrence characteristics of granite fractured water in Hulun Buir and Heilongjiang province[J].Site Investigation Science and Technology,1988,6(4):5-8.(in Chinese)]
[7]曹光奇,周仲华.地面核磁共振找水方法在花岗岩地区的应用[J].水文地质工程地质,2006,33(2):108-113.[CAO G Q,ZHOU Z H.Application of the surface nuclear magnetic resonance method to detecting groundwater in granite regions[J].Hydrogeology&Engineering Geology,2006,33(2):108-113.(in Chinese)]
[8]李国占,王璇.综合物探在花岗岩地区找水应用效果[J].勘察科学技术,2009,27(4):55-57.[LI G Z,WANG X.Application effect of water prospecting in granite region by comprehensive geophysical methods[J].Site Investigation Science and Technology,2009,27(4):55-57.(in Chinese)]
[9]戴仕宝.花岗岩地区地下水溶质的形成机制探讨[J].河南大学学报(自然科学版),2001,31(2):83-86.[DAI S B.Forming mechanism of trace elements in the ground water from granite area[J].Journal of Henan University(Natural Science),2001,31(2):83-86.(in Chinese)]
[10]向启安,杨天春.激电测深在湖南醴陵金矿激电异常评价中的应用[J].黄金科学技术,2011,19(5):1-6.[XIANG Q A,YANG T C.The application of IP sounding method to IP anomaly appraisal in Liling gold deposit,Hunan province[J].Gold Science&Technology,2011,19(5):1-6.(in Chinese)]
[11]杨天春,张辉.岩溶体的天然电场选频法异常成因研究[J].水文地质工程地质,2013,40(5):22-28.[YANG T C,ZHANG H.A study of the anomaly genesis for the frequency selection method in a natural electric field of a karst body[J].Hydrogeology&Engineering Geology,2013,40(5):22-28.(in Chinese)]
[12]杨天春,张启,王齐仁,等.天然电磁场激励下球体的天然电场选频法异常成因分析[J].湖南科技大学学报(自然科学版),2016,31(2):58-65.[YANG T C,ZHANG Q,WANG Q R,et al.Study on the anomaly genesis of the frequency selection method for a sphere under natural electromagnetic field[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2016,31(2):58-65.(in Chinese)]
[13]梁竞,韦启锋,洪卷,等.自然电场法在岩溶地区找水打井中的应用[J].工程勘察,2016(2):68-78.[LIANG J,WEI Q F,HONG J,et al.Application of self-potential method to explore water in karst area[J].Geotechnical Investigation&Surveying,2016(2):68-78.(in Chinese)]
[2]石云峰,李寻,裴妙荣,等.花岗岩裂隙中溶质运移试验研究[J].水资源与水工程学报,2016,27(1):222-226.[SHI Y F,LI X,PEI M R,et al.Experiment on solute transport in fracture of granite rock[J].Journal of Water Resources&Water Engineering,2016,27(2):222-226.(in Chinese)]
[3]M R Mahmoudzadeh,A P Francés,M Lubczynski,et al.Using ground penetrating radar to investigate the water table depth in weathered granites-Sardon case study,Spain[J].Journal of Applied Geophysics,2012,79(1):17-26.
[4]段佳松.浅层地震折射波法配合电测深法在花岗岩地区找水[J].地质与勘探,1999,35(3):46-48.[DUAN J S.Combination of shallow refraction seismic survey with electrical sounding method used for water research in the granite-covered area[J].Geology and Prospecting,1999,35(3):46-48.(in Chinese)]
[5]赵广涛.在花岗岩区找寻地下水源应着重注意的几个问题——以青岛地区为例[J].海洋湖沼通报,1990,12(4):31-36.[ZHAO G T.Criterions in the survey of ground water source at granite area[J].Transactions of Oceanology and Limnology,1990,12(4):31-36.(in Chinese)]
[6]乔喜祥.黑龙江省及呼伦贝尔盟花岗岩裂隙水类型及其赋存规律[J].勘察科学技术,1988,6(4):5-8.[QIAO X X.Types and occurrence characteristics of granite fractured water in Hulun Buir and Heilongjiang province[J].Site Investigation Science and Technology,1988,6(4):5-8.(in Chinese)]
[7]曹光奇,周仲华.地面核磁共振找水方法在花岗岩地区的应用[J].水文地质工程地质,2006,33(2):108-113.[CAO G Q,ZHOU Z H.Application of the surface nuclear magnetic resonance method to detecting groundwater in granite regions[J].Hydrogeology&Engineering Geology,2006,33(2):108-113.(in Chinese)]
[8]李国占,王璇.综合物探在花岗岩地区找水应用效果[J].勘察科学技术,2009,27(4):55-57.[LI G Z,WANG X.Application effect of water prospecting in granite region by comprehensive geophysical methods[J].Site Investigation Science and Technology,2009,27(4):55-57.(in Chinese)]
[9]戴仕宝.花岗岩地区地下水溶质的形成机制探讨[J].河南大学学报(自然科学版),2001,31(2):83-86.[DAI S B.Forming mechanism of trace elements in the ground water from granite area[J].Journal of Henan University(Natural Science),2001,31(2):83-86.(in Chinese)]
[10]向启安,杨天春.激电测深在湖南醴陵金矿激电异常评价中的应用[J].黄金科学技术,2011,19(5):1-6.[XIANG Q A,YANG T C.The application of IP sounding method to IP anomaly appraisal in Liling gold deposit,Hunan province[J].Gold Science&Technology,2011,19(5):1-6.(in Chinese)]
[11]杨天春,张辉.岩溶体的天然电场选频法异常成因研究[J].水文地质工程地质,2013,40(5):22-28.[YANG T C,ZHANG H.A study of the anomaly genesis for the frequency selection method in a natural electric field of a karst body[J].Hydrogeology&Engineering Geology,2013,40(5):22-28.(in Chinese)]
[12]杨天春,张启,王齐仁,等.天然电磁场激励下球体的天然电场选频法异常成因分析[J].湖南科技大学学报(自然科学版),2016,31(2):58-65.[YANG T C,ZHANG Q,WANG Q R,et al.Study on the anomaly genesis of the frequency selection method for a sphere under natural electromagnetic field[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2016,31(2):58-65.(in Chinese)]
[13]梁竞,韦启锋,洪卷,等.自然电场法在岩溶地区找水打井中的应用[J].工程勘察,2016(2):68-78.[LIANG J,WEI Q F,HONG J,et al.Application of self-potential method to explore water in karst area[J].Geotechnical Investigation&Surveying,2016(2):68-78.(in Chinese)]