HENiepeng,WANGNing,XIEPenggui,et al.Practice of Trenchless Rehabilitation for Sewage Trunk Pipelines in Complex Urban Environments[J].China Water & Wastewater,2026,42(8):102-108.
城区复杂环境下污水干管非开挖修复实践
- Title:
- Practice of Trenchless Rehabilitation for Sewage Trunk Pipelines in Complex Urban Environments
- 摘要:
- 城区大口径污水干管的维护与修复，是当前污水系统提质增效的重要挑战。在泉州市宝洲路DN1 200～DN1 600污水干管修复工程中，综合运用紫外光固化修复（UV-CIPP）技术、离心喷筑法检查井修复技术、聚氨酯喷涂技术、高压旋喷管基加固技术等，有效解决了高地下水位、软弱地质及受限场地等复杂环境下的缺陷管道修复难题。修复后系统性能指标得到显著改善，管道结构性缺陷修复率达100%，过流能力较修复前提升约26%，管道与检查井的整体密闭性大幅增强。该项目避免了大规模道路开挖、社会交通中断所产生的经济及社会影响，工程综合造价较开挖修复降低约20%，工期缩短近40%。
- Abstract:
- The maintenance and repair of large-diameter sewage trunk pipelines in urban areas represents a critical challenge in the current effort to enhance the quality and efficiency of sewage systems. In the rehabilitation project of DN1 200-DN1 600 sewage trunk pipelines along Baozhou Road, Quanzhou, an integrated approach was adopted. By combining such as UV-CIPP, centrifugal spraying for manhole rehabilitation, polyurethane spraying, and high-pressure jet grouting for pipe base reinforcement technology, the project successfully addressed pipeline defects under challenging conditions such as high groundwater levels, soft geology, and confined construction sites. After the repair, the structural defect repair rate of the pipeline reached 100%, the flow capacity increased by approximately 26% compared to before the repair, and the overall airtightness between the pipeline and the inspection well was significantly enhanced. This project avoided the economic and social influence resulting from large-scale road excavation and disruption of social traffic. The comprehensive project cost was reduced by approximately 20% compared to excavation and repair, and the construction period was shortened by nearly 40%.
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