闸坝对抚河流域连通性的影响研究

Research on the Influence of Gate Dams on the Connectivity of Fuhe River Basin

着重研究闸坝对流域连通性的影响(以抚河为例),通过对比分析侧向和纵向连通性指标与树枝状河网连通性指标的差异,以选择最合理的评价指标,来研究闸坝通过哪些方面对流域连通性形成阻隔、破坏。选用树枝状连通性指数对流域进行评价,探讨闸坝的数量、所处的地理位置以及自身通过能力对连通性的影响。最后,探索障碍优先级移除闸坝的可行性,借助对闸坝随机模拟移除和通过分析确定优先顺序模拟移除作对比研究,证实闸坝通过优先级拆除的合理性。

This research focuses on the influence of the Dam Gates on the connectivity of river basin(taking Fuhe River as an example),and analyzes the differences between the lateral and vertical connectivity indexes and the connectivity indexes of dendritic river networks so as to select the most reasonable evaluation indexes to study the aspects through which Dam Gate block and destroy the connectivity of river basin.In this paper,the dendritic connectivity index is used to evaluate the river basin and the influence of the number of dam gates,the geographical location and the capacity of the river on the connectivity is discussed.Finally,the feasibility of removing the dam gates with the priority of obstacles is explored,and the rationality of removing the dam with the priority is verified by comparing the random simulated removal of the dam gates with the simulated removal of the priority determined by analysis.