南流江合浦城区河段防洪设计洪水分析

通过南流江干流各水文站基本资料统计分析,对历史洪水调查、文献资料考证及洪水成因和特性了解,利用常乐水文站、文利站实测水位流量资料推算常乐水文站、周江口设计洪水成果,根据河道实测断面和常乐水文站设计洪峰流量相应水位,推算总江口~常乐站水面线,并分析计算防洪设计洪水及成果合理性论证,为合浦城区防洪工程设计提供可靠依据。

Design Flood Analysis for Flood Control of the Reach of the Nanliu River in Hepu

Cause and characteristics of flood are learnt through analysis on basic data of hydrologic stations on main stream of the Nanliu River,historical flood investigation and literature study.Design flood results of Changle Hydrologic Station and the estuary of the Zhoujiang River are derived from observed water level and flow data of Changle Hydrologic Station and Wenli Hydrologic Station. Water surface profile from the estuary of the Zongjiang River to Changle Hydrologic Station is calculated on the basis of measured river channel profile and water level equivalent to design flood peak discharge of the station.Design flood and its results for flood control are demonstrated to be rational,providing reliable reference for the design of flood control works in Hepu.