河道糙率问题研究进展  

Recent Studies and Progresses of the River Roughness

作　　者：张小琴[1] 包为民[1] 梁文清[2] 黄琳煜[1] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]二滩水电开发有限责任公司,四川成都610021

出　　处：《水力发电》2008年第6期98-100,共3页Water Power

基　　金：“十一五”国家科技支撑计划课题(2006BAC05B02)

摘　　要：河道糙率是洪水水力计算的重要灵敏参数,糙率的确定是数值计算的关键。糙率受众多因素影响,其值很难准确求得,基本的查表法和公式法得出的值并不能满足水力计算的要求,因此进行糙率参数的反问题及糙率修正方法的研究很有必要。为此,总结了糙率确定的基本方法及其新进展,分析了糙率修正领域的主要研究成果,并提出了未来河道糙率研究的主要问题及注意事项。The roughness of river channel is an important sensitive parameter for the hydraulic calculation of flood. The determination of roughness is the key to numerical calculation. The roughness is affected by many factors and is difficult to get accurately. The methods of look-up tables and formulas can＇t meet the needs of hydraulic calculation, so it＇s nee- essary to study the inverse problem and roughness correction method. For this reason, this paper summarizes some basic methods and progress of determining roughness, analyzes the research findings about roughness correction, and puts forward the main contents and some problems of future study in the river roughness.

关 键 词：数值模拟 反问题 综合糙率 糙率曲线 糙率修正 河道 

分 类 号：TV697[水利工程—水利水电工程]