电法勘探在抗旱找水工程中的应用

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摘要：电法勘探是物探技术的一个分支，以不同岩、矿石间的电性差异为基础，通过观测和研究天然电磁场和人工电磁场的空间与时间分布规律进行地质勘查。地下岩石的电阻率受含水率的影响较为明显，因此电法勘探广泛应用于抗旱找水工程。通过实例讲述如何利用电法勘探判断物探异常区、划分潜力含水区，可供工程技术人员参考。

关键词：电法；视电阻率；电阻异常；岩溶；含水层

中图分类号：P641.7 文献标识码：A 文章编号：1008-9500（2024）06-00-03

DOI：10.3969/j.issn.1008-9500.2024.06.017

Application of Electrical Exploration in Drought Resistance and Water Finding Engineering

LUO Jianbo

（Hunan Provincial Natural Resources Survey Institute， Changsha 410000， China）

Abstract： Electrical exploration is a branch of geophysical technology that is based on the differences in electrical properties between different rocks and ores. It is a geological exploration method that observes and studies the spatial and temporal distribution patterns of natural and artificial electromagnetic fields. The electrical resistivity of underground rocks is significantly affected by water content， therefore， electrical exploration is widely used in drought resistant water finding projects. This article uses examples to illustrate how to use electrical exploration to determine geophysical anomaly areas and divide potential water bearing areas， which can be used as a reference for engineering and technical personnel.

Keywords： electricity method; apparent resistivity; abnormal resistance; karst; aquifer

武冈市地处湖南省衡邵干旱走廊的边缘，境内地层岩性以灰岩、泥灰岩为主，岩溶较为发育，在部分地势较高的山区，降水极易流失，地表蓄水困难，地表水资源匮乏严重制约着这些区域居民的生活质量和发展活力。（剩余2780字）