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高密度电阻率法是以岩、矿石的电性差异为基础,通过观测和研究人工建立的地下稳定电场的分布规律来解决矿产资源、环境和工程地质问题。通过探测场的参数变化获得电性局部差异,从而认识被测目标的一种勘探手段。本文阐述了高密度电阻率法测定覆盖层厚度的工作原理、方法及其数据的处理分析过程,并将其应用于工程实践。实例分析表明,该方法对测定覆盖层的厚度具有较好效果,且具有成本低、效率高、测试简便等优点,因此其在工程应用方面具有一定价值。
The high-density resistivity method is based on the electrical differences between rocks and ores. The problem of mineral resources, environment and engineering geology can be solved by observing and studying the distribution of artificial ground-based stable electric fields. Through the detection of field parameters to obtain electrical local differences, so as to understand the measured target of a means of exploration. This paper describes the working principle and method of high-density resistivity method to measure the thickness of overburden and the process of its data processing and analysis, and applies it to engineering practice. The case study shows that the proposed method is effective in determining the thickness of overburden and has the advantages of low cost, high efficiency and easy testing. Therefore, it is of great value in engineering application.