高密度电阻率法在张峰水库勘察中的应用研究

高密度电阻率法是一种新型的勘探方法,它将电剖面与电测深法融为一体,一次测量可以完成纵横二维勘探过程,对地电结构具有一定的成像功能,是水利水电工程地质勘察的有效方法之一。文章介绍了高密度电法数据采集和处理的过程和方法,并通过张峰水库勘察应用,说明了该方法的有效性。高密度电法所解释出的基岩面高程,经与钻孔资料对比,相对误差小于1.4%。

Application of The High Density Resistivity Method in Geological Exploration of Zhangfeng Reservoir

The high resistivity method stems from electric profile technique and electric sounding technique, it is capable of finishing an exploration process of two dimensions, vertical and horizontal by once measurement, it is also of an image formation function for geoelectric regime in short, it is one effective method of geophysical explorations in water and water power project. In this paper the process for data collection and interpretation of the "high density resistivity method" is introduced, and additionally, based on the application of this method to detect an ancient channel under the dam site of Zhangfeng Reservoir. The effectness of this method mentioned above has been proved. As compared to drilling data, in measuring the elevation of the bedrock surface, the deviation caused by the "high resistivity method" is less than 1.4%of the former.