浅析太湖流域上游苕溪水系演变与连通

Evolution and connection of the Tiaoxi River system in the upstream of the Taihu Lake basin

对太湖流域上游苕溪水系的东苕溪、西苕溪汇流点的演变进行研究梳理,发现汇流点在浙江省湖州市经历四次演变:约公元前3000—约公元200年汇流于主城以东“三里桥”;约公元400—约1800年位于主城以内“江渚汇”;1958年后演变至主城以西“杭长桥”;1993年后汇于主城以北“白雀塘桥”。鉴于苕溪流域与钱塘江流域在历史上是贯通的,借鉴国外“洪隧融合”案例,从东苕溪上游青山水库由隧洞引山洪直入钱塘江,为长三角高质量一体化发展、构建幸福河湖及生态文明建设提供方案。

This study examines the evolution of the confluence points of the East Tiaoxi River and the West Tiaoxi River in the Tiaoxi River system,located in the upstream region of the Taihu Lake Basin.The confluence points in Huzhou City,Zhejiang Province,have undergone four changes throughout history.The convergence initially occurred east of the main city at“Sanli Bridge”from around 3000 BC to about 200 AD,then shifted to the area within the main city known as“Jiangzhuhui”around 400 to1800 AD.After 1958,the confluence point moved west of the main city to“Hangchang Bridge”,and after 1993,it shifted north of the main city to“Baiquetang Bridge”.Given the historical connection between the Tiaoxi River basin and the Qiantang River basin,learning from international cases of“flood tunnel integration”,by diverting mountain floodwater directly into the Qiantang River through tunnels originating from the Qingshan Reservoir in the upstream region of the East Tiaoxi River,we aim to provide a solution for the high-quality integrated development of the Yangtze River Delta,as well as contribute to the construction of happy rivers and lakes and the development of ecological civilization.