高密度直流电法在勘查城市断层的应用

Application of High-Density Resistivity Method in Urban Fault Exploration

摘要: 在地球物理勘探中，因断层赋水特性，导致断层地电特性与周围围岩有明显差异，使得常规电法勘探是在传统地球物理勘探方法中具有重要的位置，但传统直流电法跑极慢、效率低，且单一装置所获得的数据易于受到多种干扰因素的影响，为此，本文采用高密度电阻率法，结合电剖面法和电测深法的优点进行隐伏断层探测，探槽结果证实了该施工方案能准确的探测断层位置。

Abstract: In geophysical exploration, due to the water-bearing characteristics of faults, the fault’s geo-electric characteristics are significantly different from the surrounding deposits, which makes high-density resistivity detection play an important role in the traditional geophysical exploration methods. However, the traditional direct current method is relatively slow and inefficient, and the data obtained by a single device is easy to be affected by a variety of interference factors. Therefore, the high-density resistivity method is adopted in this paper. Combined with the advantages of electric section method and electric sounding method, buried fault detection is carried out. The results of the exploration trough trenching prove that the construction scheme can accurately detect the fault location.