综合探测方法在城市污水管探查中的应用

Application of Integrated Geophysical Methods in Urban Sewage Pipe Exploration

摘要: 随着城市现代化的发展，地下管线探测难度不断增加。日趋复杂的城市管网，越来越多的信号干扰以及场地施工条件限制等，使得单一物探方法越来越难解决城市工程物探问题，而采用多种物探方法相结合的方式已经成为城市物探的发展趋势。本文通过阐述上海某工地污水管排查项目，由于施工场地限制较大，地表环境变化剧烈，采用单一方法无法对管线进行精确追踪定位，结合现场场地与物探手段特点，采用地质雷达和高密度电法相结合方式探测，经开挖验证无误，体现了综合物探探测法在城市探测管线方面的优势。

Abstract: With the development of urban modernization, the detection of underground pipeline is increa-singly difficult. The complex urban pipeline network, signal jamming and the limitation of field-work sites make the problem of urban engineering geophysical prospecting become unresolved with single geophysical methods. The integrated geophysical methods are therefore becoming the trend of urban geophysical prospecting. In this paper, we apply the integrated geophysical methods to a project of urban sewage pipe exploration in a site of Shanghai. The fieldwork site is limited, and the ground environment drastically changes. In this situation, the single geophysical method is not able to precisely track and locate the position of pipelines. Considering the ground condition and the features of geophysical methods, we combine the GPR with the high-density electrical method to locate the pipelines. The excavated underground situation coincides with detected result which suggests that the integrated geophysical methods are effective in the urban detection of pipeline.