QILi-hua,DENGHai,TANQing-jian,et al.Key Considerations in Design of Sewage Pipelines Crossing River Project in a Coastal River Network City[J].China Water & Wastewater,2025,41(10):65-69.
滨海河网城市污水管穿越河涌工程设计关键点
- Title:
- Key Considerations in Design of Sewage Pipelines Crossing River Project in a Coastal River Network City
- Keywords:
- sewage pipeline network; crossing river project; coastal river network city; pipeline jacking technology; directional drilling technology
- 摘要:
- 珠海市境内河流众多，是典型的滨海河网城市。斗门区莲洲镇某污水管网工程范围涉及7条河涌，污水管穿越河涌建设共14处，其中5处顶管施工穿河、3处定向钻施工穿河、6处支墩架空跨河。为顺利通过防洪评价审查和政府审批，对污水管涉河建设方案中的过河埋深和两侧堤岸检查井选址等两个关键点进行讨论，综合对比分析市政行业和水利行业的多个相关技术标准及规程，在20年一遇或50年一遇的河道防洪标准下，采用InfoWorks ICM河道水力模型进行河道水位、流量、冲刷深度等水力计算，完成污水管道穿越河涌工程设计关键点分析，可以为类似项目提供参考。
- Abstract:
- Zhuhai City, a typical coastal river network city, is home to numerous rivers. The scope of a specific sewage pipeline network project in Lianzhou Town, Doumen District, encompasses seven rivers. A total of fourteen sewage pipeline crossings are involved, including five pipeline jacking constructions, three directional drilling constructions, and six overhead crossings with piers. To successfully pass the flood control evaluation review and obtain government approval, this paper discussed two critical aspects of the sewage pipeline crossing river construction plan: the river-crossing burial depth and the site selection for inspection wells on both sides of the embankment. A comprehensive comparison and analysis of multiple relevant technical standards and regulations from both the municipal and water conservancy industries was conducted. Under the river flood control standards corresponding to a 20-year or 50-year return period, the InfoWorks ICM river hydraulic model was utilized to perform hydraulic calculations, including water level, flow rate, and scouring depth of the river channel. This analysis provides key considerations in the design of sewage pipeline crossing river project, offering valuable references for similar projects.
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