电阻率法检测公路缺陷的仿真研究

摘要

In order to improve the efficiency of traditional detecting methods and reduce the damage brought to expressway, a simulation method was proposed in this paper to simulate the process of expressway defecting using resistivity method. First, a model for detecting internal defects of expressway using resistivity method was established according to its detection principle.Then the voltage signals of different detecting points can be calculated through finite element analysis. At last, the relationships between the changes of voltage signal with the size and location of low resistivity body were discussed. Simulation results indicated that the voltage signals can reflect the characteristics of low resistivity body. This work can provide a theoretical basis for expressway detection using resistivity method.%针对公路缺陷检测中传统检测方法效率低且对公路造成损害大的问题,提出一种采用电阻率法检测公路内部缺陷的仿真方法.首先根据检测原理及电极布置方式,建立基于电阻率法检测公路内部低阻异常体的模型,然后通过有限元计算求得检测过程中不同测点的电压信号,最后讨论电压信号的变化与公路路基内低阻异常体大小、位置的关系.仿真结果表明:电压信号的动态变化能够反映公路内低阻异常体的特征,可以为电阻率法检测的具体实施提供理论参考.