高密度电法在水文地质调查中的应用研究——以江平圩幅为例  

Application and research of high density resistivity method in hydrogeological prospecting——a case study on Jiangping town map

作　　者：陈松[1] 余绍文[1] 刘怀庆[1] 漆剑[2] 刘道涵[1] 

机构地区：[1]中国地质调查局武汉地质调查中心,武汉430205 [2]中国地质大学(武汉),武汉430074

出　　处：《地球物理学进展》2017年第2期849-855,共7页Progress in Geophysics

基　　金：中国地质调查局防城港地区水文地质工程地质调查评价项目(12120113004100)资助

摘　　要：防城港地区地下水资源匮乏,季节性缺水尤其严重,为了查明优质的供水水源,我们选取高密度电法作为勘探手段.高密度电法是用物探手段进行水文地质调查的一种重要方法,以其工作效率高、施工简单以及推断解释准确等优点,在水文地质领域应用广阔.本文概述了高密度电法的基本原理、装置类型和数据处理流程,给出了电阻率反演的基本步骤.选取了典型砂岩地区的实测数据反演研究,并与钻孔资料进行了对比验证.结果表明:(1)利用高密度电法,能够较准确地获取区内地下水含水层的埋深、厚度、空间展布形态;(2)偶极-偶极装置比温纳装置具有较高的横向分辨率,更有利于进行水文地质调查;(3)圈定了典型的低阻异常区,验证了低阻异常区位于江平幅侏罗纪承压水储水构造层,出水量较大,验证了反演推断的有效性和可靠性.通过本次工作,说明了高密度电法进行水文地质调查的应用效果,查明了该区较大的一处供水水源,为该区水资源开发利用提供了参考依据.Fang Cheng Gang is a typical area of lacking in groundwater resources and the seasonal water shortage is particularly serious. In order to identify high-quality water supply sources, high density resistivity method is chosen as a prospecting tool. High density resistivity method is an important means and has broad application prospects in hydrogeologic survey, which has the advantage of higher efficiency, simpler construction process, more accurate inference. This article outlines the basic principles, device type, and data processing of high density resistivity method, especially gives the basic steps of resistivity inversion. Some real data of typical sandstone areas are selected to study the inversion effect, which is also verified through the borehole data. The results indicate that （1） Using high density resistivity method can accurately obtain the depth, thickness and spatial distribution patterns of the groundwater aquifer; （2） Dipole-dipole device has higher lateral resolution than wenner device, and is more conducive to conduct hydro-geological survey; （3） A typical low resistivity anomaly area is delineated, which is located on the Jurassic confined water storage structure layer. Well drilling shows a large amount of water, and veries the validity and reliability of inversion. Though this work, it illustrates that the high density resistivity method has good effect in the hydro-geological investigations. The identification of the water supply source provides a basic reference to develop the water resources of this area.

关 键 词：高密度电法 装置 反演 水文地质 地下水 钻孔 

分 类 号：P631[天文地球—地质矿产勘探]