Comprehensive geophysical model for water prospecting in fault fracture zone:A case study of water supply well siting at Gantianba village
-
摘要: 乌蒙山贫困缺水区水资源严重缺乏，找水需求大、难度大。为确定了ZK12探采结合井位置，本文首先分析了工区找水环境因素的地层时代、含水介质类型、构造背景、水源条件和水动条件等5个条件；其次，对富水特征的含水岩组、蓄水构造和富水地貌进行研究；最后，重点分析地球物理特征找水因素，介绍了视电阻率联合剖面法、大地电磁测深法、瞬变电磁法、激电测深和地球物理测井等“多方法”应用效果，通过视电阻率、视极化率、衰减度、半衰时等“多参数”，确定断层裂隙水的地球物理特征，建立由浅入深的“多层次”地球物理模式。最终，创新性提出了乌蒙山连片贫困缺水区重点村镇的“多方法、多参数、多层次”地球物理找水模式，克服单一物探方法找水的局限性，精准定井位，对地下水勘查起到示范作用。Abstract: There is a serious shortage of water resources in the poverty-stricken areas of Wumengshan.On one hand, the demand for water supply is large and on the other hand it is difficult to locate the water sources. In this study, the aquifer environmental factors,water-bearing property and geophysical characteristics were comprehensive analyzed. As a result, borehole ZK12 was sited incorporating with the the analysis of fault zone,and the application of the methods including ground resistivity profile, magnetotelluric sounding, transient electromagnetics , IP sounding and geophysical well logging,etc. The geophysical characteristics for determining fault conductive zone was hence conducted by using the geophysical parameters such as apparent resistivity, apparent polarizability, attenuation, half-life failure, apparent visual metal factor, deviation degree, excitation ratio and etc. from which multiple level geophysical model was established. In this paper, we innovatively put forward the "multi-method, multi-parameter and multi-level" geophysical exploration method for locating critical water bearing zones for the resource demand from key villages and towns in Wumengshan with contiguous poverty and water-shortage ,and overcome the limitations of a single geophysical exploration technique in locating the resources and accurate borehole siting. Through examining borehole logging data, it is confirmed that the multiple-method geophysical exploration approach can effectively determine the depth of strata and water-bearing faults, provide experiences for the geophysical exploration for water exploration, as well as play a demonstration role in groundwater exploration.
-
[1] 戴苗,胡祥云,吴海波,等.地面核磁共振找水反演［J］.地球物理学报,2009,52(10):2676-2682. [2] 林君.核磁共振找水技术的研究现状与发展趋势［J］.地球物理学进展,2010,25(2):681-691. [3] 孙银行,连捷,武毅.岩溶含水介质充填水和泥识别的地球物理勘查技术探讨［J］.中国岩溶,2012,31(4):459-464. [4] 李富,邓国仕,王德伟,等.乌蒙山区探采结合井位探测物探方法综合研究［J］.地质科技情报,2017,36(5):238-243. [5] 刘伟,甘伏平,赵伟,等.高密度电法与微动技术组合在岩溶塌陷分区中的应用分析:以广西来宾吉利塌陷为例［J］.中国岩溶,2014,33(1):118-122. [6] 程亚平,蒋灵芝,黎柳月,等.综合物探技术探测平果铝厂赤泥堆场岩溶发育特征［J］.中国岩溶,2016,35(6):688-698. [7] 周文龙,吴荣新,肖玉林.充水溶洞特征的高密度电阻率法反演分析研究［J］.中国岩溶,2016,35(6):699-705. [8] 梁海,钟建平,胡向阳.高密度电法在贵州岩溶地区找水中的应用研究［J］.地下水,2017,39(6):96-97. [9] 底青云,石昆法,王妙月,等.CSAMT法和高密度电法探测地下水资源［J］.地球物理学进展,2001,16(3):53-57,127. [10] 刘金涛,胡晓明.高密度电法勘探在岩溶查找中的应用［J］.地质科技情报,2003,22(2):100-102. [11] 郑智杰,甘伏平,曾洁.不同深度岩溶管道的高密度电阻率法反演特征［J］.中国岩溶,2015,34(3):292-297. [12] 陆云祥,陈建荣,陈华根,等.我国多参数激电测深找水应用综述［J］.地球物理学进展,2011,26(4):1448-1456. [13] 曹金华,李桐林,刘永亮,等.激电和电磁效应对三维复电阻率正演结果的影响研究［J］.地球物理学进展,2017,32(2):579-583. [14] 孙仁斌,楚丽霞,王宁,等.时间域激电测深二维反演在内蒙古兴和盆地贫水区找水勘查中若干案例研究［J］.地球物理学进展,2017,32(1):387-394. [15] 武毅,孙银行,李凤哲.西南岩溶地区不同含水介质地球物理勘查技术［J］.中国岩溶,2011,30(3):278-284. [16] 孟奇猛,李庆仁.物探资料对昆明吴家营水源地岩溶发育研究的有效性［J］.中国岩溶,1992,11(4):45-55. [17] 焦彦杰,吴文贤,杨剑,等.云南岩溶石山区物探找水方法与实例分析［J］.中国地质,2011,38(3):770-778. [18] 张保祥,刘春华.瞬变电磁法在地下水勘查中的应用综述［J］.地球物理学进展,2004,19(3):537-542. [19] 朱庆俊,李伟,李凤哲,等.广西隆安县地下水储水构造的地质-地球物理模型及其地球物理响应特征分析［J］.中国岩溶, 2011,30(1):34-40. [20] 王宇,彭淑惠,王梓溦,等.云南省抗旱井定井论证方法［J］.中国岩溶, 2013, 32(3):305-312. [21] 余京.综合物探在岩溶断层中找水的研究及其应用［J］.地下空间与工程学报,2017,13(s1):442-445. [22] 李丽辉,王宇.云南省迪庆香格里拉盆地地热资源勘查物探方法的应用［J］.中国岩溶,2004,23(3):187-195. [23] 肖骑彬,蔡新平,徐兴旺,等.应用大地电磁测深勘查北京平谷盆地隐伏含水岩溶系统的结构［J］.吉林大学学报(地球科学版),2004(s1):60-64. [24] 裴建国,谢运球,刘新号,等.河南省缺水山区的基本找水模式［J］.中国岩溶,1994,13(3):314-321. [25] 王宇,袁道先,杨世瑜.云南省岩溶水地球物理探测实践［J］.中国岩溶,2007,26(2):155-162,169. [26] 王宇.西南岩溶地区岩溶水系统分类、特征及勘查评价要点［J］.中国岩溶,2002,21(2):114-119. [27] 金权,王晓明,魏继东.安徽北部岩溶泉分布规律及缺水山区找水方向［J］.中国岩溶,1989,8(4):311-318. -
点击查看大图
计量
- 文章访问数: 1799
- HTML浏览量: 571
- PDF下载量: 460
- 被引次数: 0
下载:
