无损高密度电法在城市沟渠探测中的应用

Nondestructive High-Density Electrical Method,was Applied to the Detection of Ditches in the City

高密度电法是一种高精度、高效率的探测方法,其处理软件成熟,成果图件直观,可以清晰反映目标地质体截面特征,深受地质工作者欢迎。然而,由于城市街区的道路普遍硬化,需要用电锤打眼或撬开地面砖才能供电测量,不仅降低了工作效率也对路面造成一定的伤害。为了在城市空间勘查中,充分应用高密度电法勘查技术,笔者摸索出了一套城市硬性路面条件下的高密度无损探测技术,试验结果表明,该项技术是成功的,在屯溪老街区的排洪沟渠探测中,取得了良好的勘查效果。

High-density Resistivity Method is a kind of high precision, high efficiency of detection, its processing software is mature and its achievement maps are intuitive and can clearly reflect the characteristics of the target of geological section, are very popular with the geological workers. However, as the roads in urban blocks are generally hardened, it requires to punch holes by electric hammer or pry open floor tiles to measure, which not only reduces the efficiency but also causes certain damage to the road surface. In order to fully application of high-density electrical method exploration technology in the exploration of urban space, the author figured out a set of high density nondestructive detection technique under the condition of urban rigid pavement, the test results show that the technique is successful, in Tunxi old blocks having ditches detection, good exploration results have been achieved.