狭窄型河道断面形式及糙率选取的研究  

Study on Section Pattern and Roughness Selection of Narrow Channel

作　　者：薛文斌 XUE Wen-bin(PowerChina Sinohydro11 Bureau Co.Ltd.,Zhengzhou 450001,China)

机构地区：[1]中国水利水电第十一工程局有限公司,郑州450001

出　　处：《工程建设与设计》2023年第23期70-72,共3页Construction & Design for Engineering

摘　　要：针对狭窄型河道,分析在满足防洪要求的前提下如何选择河道的断面形式,并在推求洪水水面线过程中合理选取河道的糙率。结合工程案例,实地进行暴雨洪水调查,结合河段内的地形地貌条件,因地制宜优化设计河道断面形式和选取合理的河道糙率,按照设计洪水水面线计算成果确定两岸堤防高程。Aiming at the narrow channel,this paper analyzes how to select the section type of the channel under the premise of meeting the flood control requirements,and rationally select the roughness of the channel in the process of calculating the flood surface line.Based on the project case,the field investigation of rainstorm and flood is carried out,and the topographic and geomorphic conditions in the river reach are combined.According to local conditions,the channel section type is optimized and the reasonable channel roughness is selected,and the embankment elevation on both sides is determined according to the calculation results of the designed flood water surface line.

关 键 词：狭窄河道 河道糙率 断面形式 选取研究 

分 类 号：TV133[水利工程—水力学及河流动力学]