摘要
利用长江防洪实体模型,全面系统地对荆江不同流量条件下的各水力要素进行测量,并结合三峡水库蓄水以来的水沙、地形资料,分析了荆江河段水流运动的基本规律和近期变化的特点,在此基础上对荆江不同河道整治方案进行了研究,并针对不同河型提出了具体的河势控制措施。研究成果表明:通过试验分析较详细地掌握了荆江水面纵比降、断面宽深比、流速分布及水流动力轴线变化等水力要素变化的特点,揭示了荆江河段水流运动规律,并为河道(航道)整治工程提供了科学依据。
The Yangtze River Flood Protection Physical Model is employed to comprehensively measure the hydraulic elements for different flow discharges of Jingjiang river.Furthermore,the water sediment and topography data since the impoundment of Three Gorges Reservoir were taken to analyse the general laws and characteristics of flow movement.Based on the above analysis,different river regulation programs are studied and detailed solutions for different river regimes are offered.The study reveals the flow movement rules for Jingjiang River by clearly presenting the inherent laws of hydraulic elements variation including that of the water level,water surface longitudinal slope,breadth to depth ratio of cross section,flow velocity distribution and dynamic axis of flow,and consequently provides scientific basis for river regulation.
出处
《长江科学院院报》
CSCD
北大核心
2011年第6期76-81,共6页
Journal of Changjiang River Scientific Research Institute
基金
水利部水利前期项目"三峡工程运用初期荆江河道演变与治理研究"(QQ0871/HL15)
水利部公益性行业专项(200910004)
国家自然科学基金(51079104)
关键词
长江防洪模型
荆江
水流运动特性
河道治理
Yangtze River Flood Control Physical Model
Jingjiang River
flow characteristics
river regulation
