瞬变电磁法在城市地下管线调查中的应用研究

Research on Application of Transient Electromagnetic Method in the Survey of Urban Underground Pipeline

摘要: 地下管线是保证城市日常运行和可持续发展的支撑体系，为城市提供必不可少的生活保障。然而，在城市道路修建过程中由于缺乏基础资料，导致管线破坏事故频繁发生。因此，为了能快速而准确有效探测地下空间中潜在的管线以及走向，本文将拖曳式高分辨瞬变电磁系统应用到城市地下管线探测中。以深圳市光明区地下污水金属管线勘查实例，介绍了瞬变电磁法的工作原理、数据采集设备和反演处理方法。将瞬变电磁法反演结果和地震散射结果进行对比分析，结合实际现场情况验证了瞬变电磁法的探测结果。通过上述案例可以得出：拖曳式高分辨瞬变电磁系统在城市地下管线调查中具有效率高，分辨率强以及抗干扰能力强等优点，能够适应复杂的城市工作环境。本文研究工作为城市地下管线和病害体的调查提供更高效的方法和技术。

Abstract: Underground pipelines are a supporting system to ensure the daily operation and sustainable development of the city, and provide an indispensable life guarantee for the city. However, due to the lack of basic data during the construction of urban roads, pipeline damage accidents frequently occur. Therefore, in order to detect potential pipelines and directions in underground space quickly, accurately and effectively, the towed and high-resolution transient electromagnetic system were applied to the detection of urban underground pipelines in this paper. Taking an example of underground sewage metal pipeline survey in Guangming District, Shenzhen, the working principle of transient electromagnetic method, data acquisition equipment and inversion processing method are introduced. The inversion result of the transient electromagnetic method and the seismic scattering result are compared and analyzed, and the detection result of the transient electromagnetic method is verified in combination with the actual field conditions. Through the above case, it can be concluded that the towed and high-resolution transient electromagnetic system has the advantages of high efficiency, high resolution and strong anti-interference ability in the urban underground pipeline survey, and can adapt to the complex urban working environment. The research work in this paper provides more efficient methods and techniques.