水力发电2025，Vol.51Issue(10)：31-37,120,8.
平面大转弯V型河道护岸修复工程水力特性研究
Hydraulic Characteristics of V-Shaped Riverbank Protection in Mountainous Areas
摘要
Abstract
Because of large gradient,high current velocity,and complex meandering channel of mountainous rivers,the restoration projects of the river bank overtopping and instability caused by extreme rainstorms have attracted much attention in recent years.Taking the bank protection restoration project of Shikui River in Qubei County,Yunnan Province after the"5.27"rainstorm in 2022 as an example,a typical river section is designed to carry out three-dimensional turbulence calculations based on the planar characteristics and longitudinal slope characteristics of the river channel,and the hydraulic characteristics of bank protection in the process of flood peak under the conditions of four longitudinal slopes and four types of flow rates are systematically researched,respectively.It is found that:(a)in normal operation and flood peak process,the water depth on the left bank of the two"peak"sections is 43.34％larger than that on the right bank,so it is necessary to locally raise the side wall to prevent the flood from overtopping;(b)the strong scouring of river channel and bank protection are mainly concentrated on the right bank,and the degree of scouring on the right bank is 98.42％larger than that on the left bank;and(c)the water level in the process of flood peak changes dramatically,and the dynamic pressure peak on the right bank can reach 1.3 times the load during the stabilization period of flood peak,while on the left bank it can reach 2 times.The research results can be used for zoning design and have been successfully applied to the restoration of other sections of Shikui River.After two years of flood verification,the rationality of the bank protection design and construction is confirmed,and the related research ideas and methods provide an important reference for the restoration of other mountainous rivers.关键词
山区河道/修复工程/平面V形/护岸/水力特性Key words
mountainous river/restoration project/planar V-shaped/bank protection/hydraulic characteristics分类
建筑与水利引用本文复制引用
余再兴,吕世龙,时家茂,李江松,罗永钦,黄海锋,葛鹏..平面大转弯V型河道护岸修复工程水力特性研究[J].水力发电,2025,51(10):31-37,120,8.基金项目
国家自然科学基金资助项目(42467009) （42467009）
云南省"兴滇英才支持计划"青年人才项目(KKRD202204020) （KKRD202204020）
云南省基础研究计划项目面上项目(202301AT070437) （202301AT070437）
