污水管道工程建设中大埋深管线探测技术与应用

Technology and Application of Pipeline Detection for Large and Medium Buried Depth in Sewage Pipeline Construction

大埋深管线探测对城市地下管道建设工程十分重要。文章结合南京市某污水管道改造工程,综合应用3种地下管线探测方法,即先利用电磁感应法及探地雷达法对目标区域浅层敷设的管线进行初步探测排查,确定浅层管线的分布位置,再利用孔中磁梯度法对目标区域的深埋管线进行精细探测,进而精准地探测出目标管线的埋深和位置。综合物探方法较单一物探方法贵,但是有效解决了地质环境复杂、地下水丰富且地表影响因素较多环境下的大埋深管道开挖安全风险以及潜在风险造成的损失等问题,对项目的绿色环保施工、安全文明施工十分重要,并在工程取得了成功的应用,可为后续同类项目提供一定参考。

The detection of the larger burial depth pipeline is crucial for the construction of underground pipelines in urban areas.In this paper,a comprehensive geophysical survey method is employed for a wastewater pipeline renovation project in Nanjing,China.The approach integrates three underground pipeline detection methods:electromagnetic induction and ground penetrating radar for initial detection and screening of shallow-buried pipelines in the target area,followed by the magnetic gradient method for precise detection of the larger burial depth pipeline.This methodology facilitates accurate determination of the buried depth and location of the target pipeline.While this comprehensive geophysical method incurs higher costs compared to individual methods,it effectively addresses safety risks and potential losses arising from complex geological environments,abundant groundwater,and numerous surface influence factors associated with the larger burial depth pipeline.It holds significant importance for environmentally friendly construction practices as well as safe and orderly project execution.The method is successfully implemented in the project and can offer valuable insights for similar projects in the future.