水利学报2017，Vol.48Issue(2)：184-192,9.DOI:10.13243/j.cnki.slxb.20160217
弯曲河道立堵截流龙口水力特性分析
Study on hydraulic characteristics of end-dumping closure-gap in curve river
摘要
Abstract
The water flow characteristics during the closure of curve river is extremely complex:both the curve shape of river and the layout of closure structures take great influences on the difficulty of river closure.The study of the hydrodynamic characteristics in different layout modes will be useful in determining the appropriate plan for river closure.The main influencing factors for curve river closure were analyzed,and a calculation model for the flow regime of gap was built on the basis of construction hydraulics.The influences of the width ratio of gap to river,the bend angle and the gap location on flow velocity were studied.The differences of time-varying and place-varying for flow velocity in gap were put forward,and relative water depth and flow velocity of gap with respect to the river bend were given by this model.Finally,the feasibility of the calculation model and the applicability of the conclusions had been verified by the curve river closure of Danba Hydropower Station construction.The study can be an important reference for the optimal design of river closure layout and scheme.关键词
弯曲河道/立堵截流/水力特性/施工水力学/弯道形态Key words
curve river/end-dumping closure/hydraulic characteristics/construction hydraulics/curve shape分类
建筑与水利引用本文复制引用
熊毅,胡志根,陆贺,王勤,王强..弯曲河道立堵截流龙口水力特性分析[J].水利学报,2017,48(2):184-192,9.基金项目
国家自然科学基金项目(51279137) （51279137）
