余姚城北圩区布置及排涝泵站规模研究

Polder Layout and Drainage Pumping Station Scale in the Northern Yuyao City

摘要: 余姚市遭遇2013年“菲特”台风特大洪灾后，为提高中心城区防洪排涝能力，分片实施中心城区围圩电排工程，但在规划方案制定过程中，由于未能充分考虑本区域的历史排水习惯，以及协调好圩区建设和城市建设的矛盾，致使规划方案未能全面保护受灾区域，并导致工程实施困难。本次研究针对滨海城市感潮河网地区，建立流域洪水模拟数学模型，从保护对象的完整性、工程实施的可行性以及工程实施的防洪排涝效益三个角度出发，对余姚城北圩区布置及排涝泵站规模进行优化调整，最终选取在工程可行性、城市景观、防汛调度、工程投资等方面均较优的方案作为城北圩区布置推荐方案，确保余姚城区防洪排涝工程建设的顺利进行和中心城区的防洪排涝安全。

Abstract: In order to improve the ability of the central city flood control and drainage after “Fitow” typhoon in Oc-tober, 2013, the plan of slice implementation of urban district pumping stations was suggested in the Yuyao City. Since it did not consider the regional history of drainage conventions and coordinate the contradiction of water conservancy and urban construction, the plan is failed to fully protect the affected area which leads very difficult for project implementation. This research takes the coastal tidal river network area as example and establishes a flood simulation model to improve the polder area layout and drainage pumping station scale in the north district of Yuyao city. From the implementation of protecting integrity, engineering feasibility, flood control and drainage efficiency, the polder area layout scheme is ultimately selected by considering urban landscape and project investment factors, which the flood con-trol and drainage engineering would be constructed smoothly in the Yuyao city.