三峡枢纽上游引航道概化模型试验装置设计  

Design of a conceptual model for TGP upstream approaching channel

作　　者：李俊凯[1] 王博[1] 王睿禹[1] 邵学军[1] 

机构地区：[1]清华大学水利水电工程系,北京100084

出　　处：《实验技术与管理》2007年第10期55-57,共3页Experimental Technology and Management

基　　金：国家自然科学基金项目(50479004,50221903);国家重点基础研究发展计划项目(2003CB415200)

摘　　要：该文采用具有不同变态率的概化河工模型,研究了三峡枢纽上游引航道非恒定冲沙水流的流态和冲沙效果,评价了现有防淤清淤措施的效果,探讨了非恒定流冲沙中的时间变态问题的修正方法。模型利用以水箱、水泵和管道连接成的自动水循环系统,通过压力传感器测量非恒定流动过程中的沿程水面线变化,用图象处理粒子跟踪方法量测表面流态,保证小比尺模型的测量精度。A conceptual model for TGP upstream approaching channel is designed with variable distortion ratios, to study the flow pattern and sediment flushing efficiency by unsteady flow in the TGP upstream approaching channel. Effectiveness of the current sediment flushing measurements is evaluated, and methods are proposed to reduce test errors due to the time scale distortion for unsteady flow running during the sediment flushing experiments. The model consists of pumps, water pipes, valves, a tank and approaching channel, which is made of synthetic glass. Several instruments are used to ensure the accuracy of measurements in the small scale model, for example, the water surface profile in unsteady flow process is measured by stress sensors and the surface fluid state is measured by using the PTV method.

关 键 词：引航道 三峡上游 模型试验 防淤清淤 时间变态 

分 类 号：TV131.2[水利工程—水力学及河流动力学]