河道断点打通效果评价研究——以浦东新区骨干河道为例

Evaluation Study on the Effects of Disconnection Resolution in River Channels—A Case Study of the Main River Channels in Pudong New Area

摘要: 针对河网中的断点问题，以浦东新区骨干河道为例，构建了一套包含水系形态、结构连通性和水力连通性的评价指标体系，采用AHP-熵综合权重法进行指标赋权，以科学评估断点打通的效果。研究发现，断点打通能提升水面率、河网密度和槽蓄量，增强水系环度和连通度，改善流速和缩短水体交换时间。本研究可为河道整治和水资源管理提供决策支持，助力提升区域水安全和城市韧性。

Abstract: This study focuses on the issue of disconnections within river networks and selects the main river channels of Pudong New Area as an example. It constructs an evaluation index system that includes water system morphology, structural connectivity, and hydraulic connectivity. The AHP-entropy composite weight method is used for index weighting to scientifically evaluate the effects of disconnection resolution. The study finds that resolving disconnections can enhance the water surface rate, river network density, and reservoir capacity. It can strengthen the degree of water system cyclicity and connectivity, and improve flow velocity and reduce the time for water body exchange as well. This research can provide decision support for river channel and water resource management, helping to improve regional water safety and urban resilience.