| 窦明,石亚欣,于璐,李桂秋,贾瑞鹏.基于图论的城市河网水系连通方案优选——以清潩河许昌段为例[J].水利学报,2020,51(6):664-674 |
| 基于图论的城市河网水系连通方案优选——以清潩河许昌段为例 |
| Optimization of connecting schemes for urban river networks based on graph theory: A case study of Xuchang section of Qingying River |
| 投稿时间：2019-11-30 |
| DOI：10.13243/j.cnki.slxb.20190848 |
| 中文关键词: 图论 水系连通 连通方案优化 多闸联合调度 清潩河 |
| 英文关键词: graph theory connectivity of river system connectivity scheme optimization multi-gate joint dispatch Qingyi River |
| 基金项目:国家自然科学基金项目（51679218，51709238，51879239，U1803241） |
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| 中文摘要: |
| 对于复杂河网水系来说，水系连通方案的选择决定了河道是否有效连通以及各种功能能否得以保障。为了优选最佳水系连通方案，本文以清潩河许昌段为研究对象，借助图论法构建了城市水系河网图模型；考虑多闸联合调度以及各节点水量平衡关系，并利用图模型的邻接矩阵和加权邻接矩阵来描述河网水系对水量的分配作用，进而计算整个河网水系各河段和节点的流量值；以水生态景观面积最大为优选目标，结合河网水量分配关系和水力约束建立了多闸联合调度下的水系连通方案优选模型，优选得到在不同工况下的清潩河许昌段最佳水系连通方案。结果显示，在多数连通方案下河网流量可能会超出流量限值，而优选方案下的河网流量不仅可以满足流量约束、保障河网功能需求，还可有效提高水生态景观面积。 |
| 英文摘要: |
| The connectivity scheme choice of complex river system will affect the effectiveness of river connectivity and the guarantee of river functions. In order to optimize the connecting scheme,the Xuchang section of Qingying River is taken as the research object in this paper and the graph theory method is used to construct a river network model which takes multi-gate joint dispatch into account, and the adjacency matrix and weighted adjacency matrix of the graph model are used to describe the distribution of water and calculate the flow of the river network system. Then the optimal model is established with the maximum area of water ecological landscape as the optimal target, and the water distribution relationship and hydraulic constraint as the constraints to optimize the river system connecting scheme. The application results in Qingyi River show that the river network flow under the optimal scheme can not only meet the constraints, guarantee the functional requirements,but also effectively increase the area of water ecological landscape. |
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