EH4电导率成像系统在云南红河州应急水源地的应用

通过地表调查和常规的经验判断很难查明岩溶地下水系的补给、径流及排泄等重要信息,因此,水文地质工作困难,打井工程出水率低.通过在已知的水井、干井位布置的EH4试验剖面,采用EH4电导率成像系统,分析并总结岩溶地下水分布特征,并将该方法应用于云南红河州地区应急水源地勘查,最终布置(深)井位并成功打出地下水.由此也表明了EH4电导率成像系统应用于岩溶地下水结构勘探中具有可行性和有效性.

Application of EH4 Electric Conductivity Imaging System for Emergency Water Source Exploration in Honghe Canton,Yunnan Province

In 2010,the southwest region of China experienced a severe drought that water for industry and residents’ life were badly needed.Finding the distribution of local groundwater systems was the most direct and effective way to solve the water shortage problem.However,because of the developed karst tubes in the southwest area,it was difficult to identify the karst groundwater recharge,runoff,drainage and other information only through surface survey or general experience.Therefore,the hydrogeological work was difficult that the water well drilling project was of low efficiency.We disposed EH4 test sections at the known wells as well as dry wells with EH4 electric conductivity imaging system.We analyzed and concluded the distribution characteristics of the karst groundwater,and applied this method to the emergency water source exploration for Honghe Canton,Yunnan Province.Deep well was located,and drilled water,which also indicated the feasibility and effectiveness of EH4 electric conductivity imaging system for the structure exploration of karst groundwater.