基于三维探地雷达系统的软弱地基管道泄漏探测结果分析——以某滨海城市热力资源厂区Ⅰ期工程为例

Analysis of Pipeline Leakage Detection Results in Soft Ground Based on 3D Ground Penetrating Radar System——Taking Phase Ⅰ Project of Thermal Resource Plant Area in a Coastal City as an Example

软土地基的不均匀沉降可能造成热力厂区地下循环冷却供排水管线路的损坏,进而引起管道漏水或与较低地下水位汇流形成不明来源水流。为了对这一现象进行检测,文章以某滨海城市热力资源厂区Ⅰ期工程为例,运用三维地质雷达系统对该地下循环冷却供排水管线路及周边土体区域进行全面排查,比较分析地质雷达所探测地下循环冷却供水管和回水管及周边地质的特征。结合现场检查和设计资料进行综合分析,发现冷却塔西侧地下含水量较高且土层松动异常区域,可以判断出在软土地基条件下地下管线渗漏区域和地基损坏区域,该研究方法和成果具有较高的工程应用价值。

The uneven settlement of soft soil foundation may cause damage to the underground circulating cooling water supply and drainage pipelines in thermal power plant area,thereby causing pipeline leakage or confluence with lower groundwater level to form water flow from unknown sources. In order to detect this phenomenon, this paper takes the Phase I project of a thermal resource plant area in a coastal city as an example, uses the 3D geological radar system to conduct a comprehensive investigation of the underground circulating cooling water supply and drainage pipelines and the surrounding soil area, and compares and analyzes the characteristics of the underground circulating cooling water supply pipes and return pipes and the surrounding geology detected by the geological radar. It carries out a comprehensive analysis combined with the field detection and design data, and it is found that the area with high underground water content and abnormal soil loosening on the west side of the cooling tower can determine the leakage area of underground pipelines and the damage area of the foundation under the condition of soft soil foundation. The research method and results have high engineering application value.