电法找岩溶体、温泉热水源和水库坝漏水部位的应用实例

PRACTICAL APPLICATION OF ELECTRICAL METHODS IN EXPLORING KARST, HOT-WATER SOURCE FOR HOT SPRING AND LEAKING AREA OF A RESERVOIR DAM

文中给出了 3种勘察目标的电法探测实例 :(1)寻找浅部岩溶体的电阻率Schlumberger测深断面探测实例 ,介绍了一套电阻率Schlumberger测深断面的经验解释方案 ,它在浅部岩溶勘察中有较好的应用效果 ;(2 )四川会东县绿荫塘水库坝中漏水部位的组合电法探测实例 ,实例证实严重漏水库坝中漏水通道的过滤电场强度大 ,易被测量 ,IP效应存在 ,组合使用电阻率法、自然电场法和激发极化法可相对准确地确定土质水库坝体漏水部位 ;(3)西藏昌都察雅县卓玛温泉深部热水源通道的探测实例 。

This paper presents three kinds of practical application of electrical method.①Schlumberger resistivity sounding section is applied to explore shallow karst, where a set of empirical interpretation scheme for the Schlumberer resistivity sounding section is introduced. The final results confirmed the effectiveness of this method in exploring shallow karst.②Comprehensive electrical sounding method is applied in exploring leaking area at L Yintang Reservoir Dam in Huidong county in Shichuan. Due to the strong filtering electrical field at leaking channels of the severely leaked reservoir dam and noticeable IP effect, the electrical field is easy to be measured. Practical application confirms that the place of the leaking area of the reservoir dam can be rather accurately ascertained by combing resistivity sounding method, self-potential method and induced polarization together.③A practical example is showed in exploring the deep water-source at the Zhuoma hot spring in Chaya County in Tibet. And the practical section of the spring is a typical section with rather complete geological factors of hot spring and characteristics of electrical abnormality.