Water shortage in southwest China constitutes a serious threat to local people's living water, and restrictes the economic development of this region. Therefore, the reasonable choice of integrated geophysical methods and technologies for finding underground water and improving the efficiency of groundwater exploration on the basis of the hydrogeological characteristics of southwest China constitutes a very important problem faced by hydrogeologists. This paper describes the basic principles, technical characteristics and application of the electrical conductivity imaging system and high density resistivity method, exemplified by application practice of groundwater exploration in karst mountain areas. The comparative analysis, the delineation of water areas in the karst zone, the determination of well locations all show that the method is effective. This paper presents suggestions for groundwater exploration in Southwest China and utilization of groundwater resources in future.%西南地区水资源短缺严重威胁到当地人民群众生活用水,也制约了本地区的经济发展.如何针对西南缺水地区水文地质特点,合理选择地球物理勘探综合技术方法寻找地下水,提高地下水勘查效率,是水文地质工作面临的十分重要问题.本文介绍了电导率成像系统和高密度电阻率法的基本原理、技术特点和适用范围,结合云南岩溶山区地下水勘查的应用实例,进行对比分析,圈定了含水岩溶带,确定了井位,有效解决了当地供水问题,说明了方法的有效性.提出西南地区地下水勘查建议,为今后的地下水资源利用工作提供借鉴.
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