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多年来,我们在灰岩地区应用电法探寻隐伏岩溶、裂隙,取得良好效果,所定井位成井率高,电测成为水文地质勘探中不可缺少的手段之一。在实际工作中,因电测受种种干扰因素影响,致使ρ_s曲线发生畸变,给解释工作带来一定困难。如何正确分析曲线,以提高解释精度,是物探工作者所关心的问题。本文根据我们多年来在岩溶地区工作体会,对岩溶的曲线类型提出一些粗浅的认识,不妥之处请指正。利用电法探测岩溶、裂隙,一般以联合剖面法、电测深法为主。现分述如下。
Over the years, we have used electrical method in limestone area to explore hidden karst and fractures and achieved good results. Well logging rate is high, and electrical measurement has become one of the indispensable tools in hydrogeological exploration. In actual work, due to the electrical measurements affected by various disturbances, resulting in ρ_s curve distortion, to explain the work to bring some difficulties. How to correctly analyze the curve to improve the accuracy of interpretation is a matter of concern to geophysical workers. Based on our experience in karst areas over the years, this paper puts forward some superficial understanding of the karst curve types. The use of electrical method to detect karst, fractures, general joint profile method, electrical sounding method based. Now is as follows.