摘要
为做好广州市白坭河流域防洪规划,基于有限的实测水文资料,结合搬家指数法、查算图表法、综合单位线及推理公式等多种方法,对白坭河流域展开设计洪水计算,确定了遭遇100 a一遇洪水时主要控制断面的洪量。结果表明,以本地洪水为主时,鸦岗断面流量较目前防洪标准(20 a一遇)高约900 m^(3)/s,有必要提高流域内干支流堤防的防洪标准。研究成果可为该流域的综合规划提供参考。
In order to better complete the flood control planning of the Baini River Basin in Guangzhou,based on the limited measured hydrological data,combined with the methods of moving index,referring chart and figure,comprehensive unit hydrograph and deducing formulae,the calculation of the design flood was carried out to determine 100-year flood discharge at main control sections.The results indicated that the flood discharge at Yagang is900 m^(3)/s higher than that in the event of a 20-year flood.Therefore,the flood control standards of main stream and tributaries of the Baini River should be upgraded.This study provides an important reference for the comprehensive planning of the Baini River Basin.
作者
朱婷
ZHU Ting(Guangdong Hydropower Planning&Design Institute,Guangzhou 510635,China)
出处
《水利水电快报》
2022年第7期33-37,共5页
Express Water Resources & Hydropower Information
关键词
设计洪水分析
防洪能力评估
搬家指数法
白坭河流域
flood control analysis
capability evaluation of flood control
moving index method
Baini River Basin
