高分辨电阻率法在云南岩溶地区地下水勘探中的应用

Application of High Resolution Resistivity Method to Groundwater Exploration in Yunnan Karst Regions

在西南岩溶地区,对于大多数体积小、埋深大的管道岩溶水的探测,传统装置的直流电法的分辨率不够。高分辨电阻率法采用的装置是单极—偶极装置,在数据采集方面,与高密度电阻率法类似,但它的勘探深度相对更深。本文通过在云南省红河州三个典型工区的应用案例,说明了采用目标异常匹配法的解释方法,高分辨电阻率法在西南岩溶地区可以很好地判断出异常体的位置和大小。所得结果与实际情况吻合较好。为此,针对三个工区的试验和解释结果,建议在测线3和测线5进一步开展深部探测工作。

In the southwest karst area,the resolution of traditional device of direct current method is not enough to detect majority pipeline karst water with small size,large buried depth.High resolution resistivity method uses pole-dipole device to collect data,which is similar to that of high density resistivity method,but the former is relatively deeper in exploration depth.This paper deals with three typical application cases in Honghe of Yunnan province,and explains the adoption of target abnormal matching method.The high resolution resistivity method can determine the size and location of the abnormal body,and theresults obtained are in line with actual situation.Therefore,in view of the experiments and their results of the three test areas,deep exploration work is suggested to be undertaken in line 3and line 5.