二维高密度电阻率法数值模拟与应用

高密度电阻率法作为工程勘察领域广泛使用的勘察方法之一，与传统电阻率法相比，具有效率高、信息丰富等优点。本文首先从高密度电法原理出发，介绍了两种常见的装置（温施装置和温纳装置）的特点。然后依据实测资料建立了地电理论模型，并通过理论正反演数值模拟，分析了两种装置下模型的电性响应特征，并与实际资料与进行了比较，进而进行地层分层和地质解释。结果表明，温施装置进行地质分层效果更佳，通过高密度电法正演模拟指导反演可提高地层分层和地质解释的精度。

Two-dimension numerical simulation and application of the high-intensity resistivity method

As one of the widely used tools in engineering surveys, the high-intensity resistivity method has the advantages of high efficiency, abundant information, and others compared with the conventional resistivity method. In this paper, we first introduce the principle of the high-intensity resistivity method, and present the characteristics of two devices (Wenner-Schlumberger and Wenner devices) which are commonly employed. Then we construct a theoretical model based on measured data. Through theoretical numerical simulation of forward modeling and inversion, we analyze model characteristics of the electrical response with the two devices, then do the stratigraphic classification and geological interpretation, and comparison with the measured data. The results show that the Wenner-Schlumberger device is more efficient than the Wenner device in determination of geological stratification. And forward modeling of high-intensity resistivity allows us to improve the accuracy of stratigraphic division and geological interpretation.