基于洪水调查的漓江水面线计算方法探究  

Discussion on water surface profile calculation method of Lijiang River based on flood survey

作　　者：吴树诚 莫建英 WU Shu-cheng;MO Jian-ying(Guilin Hydrology Center,Guilin 541100,China)

机构地区：[1]桂林水文中心,广西桂林541100

出　　处：《广西水利水电》2024年第5期85-87,共3页Guangxi Water Resources & Hydropower Engineering

摘　　要：由于近年来漓江大洪水频繁,洪灾造成的损失越来越大,作为国际旅游名城的桂林,洪涝灾害也带来一定的国际影响。因此,随着桂林市旅游产业以及经济的发展,防洪的要求也就越来越高。本文选择漓江桂林城区至阳朔县城沿岸11个断面进行不同频率的洪水水面线分析计算,利用“1998.6”、“2008.6”、“2017.7”3场洪水调查成果计算糙率和比降,通过分析桂林、阳朔水文站的各频率流量,再根据曼宁公式计算出流量对应的水位,从而得出各频率水面线,为漓江流域水面线计算提供技术支撑。Major floods have occurred frequently in Lijiang River in recent years,and the losses caused by floods is increasing.Guilin is a famous international tourist city,so flood disasters also bring certain international impacts.Therefore,with the development of Guilin's tourism industry and economy,the requirements for flood control are be⁃coming higher and higher.11 sections along the Lijiang River from Guilin City to Yangshuo County were selected to analyze and calculate the water surface profiles under floods of different frequencies.The survey data of three floods occurred in June of 1998,June of 2008 and July of 2017 were used to calculate the roughness and slope.Analysis was made on the flow data of Guilin Hydrological Station and Yangshuo Hydrological Station at different frequen⁃cies,and the water level corresponding to the flow was calculated according to Manning formula.Based on above the water surface profiles at different frequencies were calculated,which provide technical support for water surface pro⁃file calculation of Lijiang River Basin.

关 键 词：水面线计算 洪水调查 洪水频率分析 大断面选取及测量 糙率 比降 漓江 

分 类 号：TV133[水利工程—水力学及河流动力学]