摘要
电阻率测深法是利用岩石电阻率的差异,保持观测点不动,而不断改变电极距进行观测的一种方法。随着供电电极距AB的增大,电流分布范围加深变宽。此时视电阻率值ρs即反映了该测点周围更宽范围内电性不均匀的情况。文章简述了高密度电测深法的基本原理。以不同地区工程勘察为例,简要介绍高密度电测深法在岩溶勘察,划分覆盖层厚度,断层破碎带等方面的探测效果。
Resistivity sounding method is a method of using the differences of rock resistivity to keep observing points still and change electrode distance constantly for observation.With the distance increase of AB,the electricity is deepened and widened.Then the ρs reflects the asymmetry of this point.This paper,taking engineering exploration in different areas an example,briefly introduces the application of the high density electrical sounding method in karst investigation,the thickness of dividing covering layers and fault fracture zones.
出处
《工程地球物理学报》
2013年第2期195-199,共5页
Chinese Journal of Engineering Geophysics
关键词
高密度电阻率测深
岩溶勘察
覆盖层
断层破碎带
high density electrical sounding method
karst investigation
covering layer
fault fracture zone
