多种非开挖技术在泵站出水总管应急抢修中的组合应用实践

Combined Application Practice of Multiple Trenchless Technologies in Emergency Repair of Main Outlet Pipe of Pumping Stations

摘要:

以上海市都园路污水泵站出水总管应急抢修工程为例，结合现场踏勘与CCTV检测结果，分析了管道腐蚀塌陷的成因及缺陷分布特征。针对泵站出水管位于S4高速立交下方、无法开挖的特殊工况，对比了单一非开挖修复工艺与组合工艺的适用性，提出“不锈钢快速锁+喷涂找平+CIPP翻转法+注浆填充加固” 组合工艺进行应急抢修。详细阐述了各工艺的技术特点、联用优势及施工关键参数，通过修复效果检测、过流能力计算及造价分析验证了组合工艺实施的可行性。结果显示，修复后管道过流能力提升18.64%，1年运行无异常，可为同类严重腐蚀穿孔管道的应急抢修提供参考。

Abstract:

Taking the emergency repair project of main outlet pipe of sewage pumping station in Duyuan Road, Shanghai as an example, combined with the on-site investigation and CCTV inspection result, the causes of pipe corrosion and collapse, and distribution features of defects are analyzed. In response to special construction condition where the outlet pipe of pumping station is located under S4 Expressway Interchange and cannot be excavated, a combined technology of “stainless steel quick lock + spray leveling + CIPP turnover method + grouting filling reinforcement” is proposed for emergency repair by comparing the applicability of the single trenchless repair process and the combined process. The technical characters, joint-use advantages and key parameters of each technology are explained in detail. The feasibility of implementing combined technologies is verified through repair effect test, flow capability calculation and construction cost analysis. The result shows that the pipe flow capability improves by 18.64% after repair, with no defect in one year of operation, which can provide a reference for emergency repair of similar severely corroded perforated pipes.