Hydraulic Modelling of the Two-directional Interaction between Sewer and River Systems
Hydraulic Modelling of the Two-directional Interaction between Sewer and River Systems
复制标题
下水道与河流系统双向相互作用的水力建模
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
J. Berlamont
中科院分区：
文献类型：
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作者：
A. Bolle;A. Demuynck;R. Bouteligier;S. Bosch;A. Verwey;J. Berlamont
下水道网络和河流系统通常以单独的方式进行研究。然而，这些系统可以在两个方向上相互作用。首先，城市排水系统和合流制污水溢流对受纳河流产生影响。第二，河水水位高可以避免过多的污水排入河中。当想要对这种相互作用的两个方向进行建模时，必须使用单向链接的下水道和河流模型进行多次迭代。一个更好的解决方案是将两个模型的数值格式集成到一个模型中。WL I德尔夫特液压的SOBEK软件使这成为可能。在这项研究中，SOBEK被用于连接Erpe-Mere及其接收Molenbeek河的下水道网络的现有模型（从InfoWorks和Mike Ii转换后）。结果表明，对于沿河流沿着的历史和人工降雨事件的模拟结果，双向连接产生类似的结果相比，单向连接。然而，对于下水道模型的结果，在高流量条件下发现了很大的差异。因此，案例研究表明，双向下水道河流相互作用可以在很大程度上影响下水道洪水风险估计，从而也影响下水道系统的设计。
Sewer networks and river systems are most often studied in a separate way. However, these systems may interact in two directions. Firstly, the effluents of urban drainage systems and combined sewer overflows have an impact on the receiving river. Secondly, a high water level in the river may avoid excess sewer flow to be discharged into the river. When one wants to model both directions of this interaction, multiple iterations have to be made using the one-directionally linked sewer and river models. A better solution is to integrate the numerical schemes of both models into a single model. The SOBEK software of WL I Delft Hydraulics makes this possible. In the study SOBEK was used to link existing models (after conversion from InfoWorks and Mike Ii) for the sewer network of Erpe-Mere and its receiving Molenbeek river. It is shown that for the simulation results along the river for both historical and synthetic rainfall events, the two directional linking generates similar results in comparison with the one-directional linking. However, for the results of the sewer model large differences are found under high flow conditions. Hence, the case--study illustrates that two-directional sewer-river interactions can largely influence sewer flood risk estimations and consequently also affect sewer system design.