污水系统旱天外水入侵排查应用研究

Application Research on Detection of External Water Intrusion in Sewage Systems during Dry Days

摘要:

旨在提出一种高效、经济的污水管网外水入侵诊断方法，以克服传统CCTV检测方法耗时、耗力的缺点，快速缩小旱天外水入侵的范围，提高污水管网诊断效率。针对旱天外水入侵问题，提出了一种基于在线监测与便携式手持设备联合作业的监测模式。首先，利用在线监测数据和分区诊断技术，识别外水入侵严重的区域；然后，通过便携式手持设备进一步缩小问题范围至特定管段或清水入流点。方法应用于某北部城市污水管网的实际诊断，成功缩小了多个问题管段范围及精准定位多个外水入侵点，验证了这种方法在问题诊断中的高效性和实用性。

Abstract:

An efficient and economic method for diagnosing external water intrusion in sewage pipe networks is proposed to overcome the time-consuming and labor-intensive drawbacks of traditional CCTV inspection methods. The goal is to quickly narrow down the scope of dry-weather external water intrusion and improve the efficiency of sewage pipe network diagnostics. To address this issue, a monitoring mode based on the combined operation of online monitoring and portable handheld devices has been developed. First, the online monitoring data and zonal diagnostic techniques are used to identify the areas with severe external water intrusion. Then, the portable handheld devices further narrow down the problem scope to the specific pipe sections or clear water inflow points. This method applied to the actual diagnosis of a sewage pipe network in a northern city successfully narrows down multiple problematic pipe sections and precisely locates multiple external water intrusion points, which verifies its efficiency and practicality in problem diagnosis.