激电测深方法在东北地区松散岩类地下水探查中的应用  

Application of Induced Polarization Depth Method in Exploring Loose Rocks Groundwater in Northeast China

作　　者：何清立 蒙凯 He Qingli;Meng Kai(Jilin Branch of China National Geological Exploration Center of Building Materials Industry,Changchun Jilin 130000,China;Northwest Geological Exploration Institute of China General Metallurgical Geology Burean,Xi’an Shaanxi 710054,China)

机构地区：[1]中国建筑材料工业地质勘查中心吉林总队,吉林长春130000 [2]中国冶金地质总局西北地质勘查院,陕西西安710054

出　　处：《工程地球物理学报》2024年第4期636-644,共9页Chinese Journal of Engineering Geophysics

基　　金：吉林省政府重点水利建设专项基金(编号:E5000000051000195)。

摘　　要：本文对东北平原地区某城市下辖206个村屯集中式城乡供水工程进行前期地下水探查工作,主要目的是了解和掌握区域范围内地下含水层分布情况,寻找地下水赋存层位大致深度和分布规律,并对富水性进行分析和验证,为后期钻探和布井工作提供技术指导。本次研究主要利用激电测深方法技术,通过数据采集及成果解译,最终将工作区地层划分出3类含水层,由上至下依次为冲积砂潜水含水层、中细砂潜水含水层以及砂砾岩承压含水层,其中潜水含水层在地表以下30 m深度范围内,承压含水层在地下深部70 m以下,同时展示了不同含水层在探查范围内顶板埋深的分布情况。通过对地层富水性分析,全区85%平面范围内富水性表现强富水-中等富水,15%平面范围富水性表现弱富水性。最终通过钻孔对解译推断结论进行验证,结果基本吻合,证明了激电测深法在该地区地层找水方面的适用性。Based on the preliminary groundwater exploration of 206 centralized urban and rural water supply projects under the jurisdiction of a certain city in the Northeast Plain,this article aims to grasp the distribution of groundwater aquifers within the region,identify the approximate depth and distribution pattern of groundwater occurrence layers,and verify the water abundance,providing technical guidance for later drilling and well distribution,mainly using the induced polarization depth method to classify the strata in the working area into three types of aquifers alluvial sand aquifer,medium fine sand aquifer,and sand gravel confined aquifer,listed from top to bottom,The groundwater aquifer is within a depth range of 30 meters below the surface,and the confined aquifer is below 70 meters underground.At the same time,the distribution of the top plate burial depth of different aquifers within the exploration range is displayed.Through the analysis of the water abundance of the strata,the water abundance within 85%of the plane range in the entire area shows strong to moderate water abundance,while the water abundance within 15%of the plane range shows weak water abundance.Final drilling verifies the interpretation and consistent inferences,proving the applicability of the induced polarization sounding method in water exploration in the geological strata of the region.

关 键 词：地下水 富水性 激电测深法 钻孔 

分 类 号：P631.3[天文地球—地质矿产勘探]