摘要
深圳河治理工程四期滞洪区模型试验的难点在于非恒定流自动控制系统和下游河道尾门水位控制的不确定性。通过经验公式计算和水槽试验优选模型加糙方案,下游尾门处采用复合堰的控制方法实现水位—流量自拟合功能,对深圳河滞洪区溢流堰结构形式、溢流堰与下游堤防衔接方式,以及溢流堰堰顶高程进行优化试验研究。试验结果表明,优化后的设计方案工效效果显著,可推广至类似滞洪区模型试验控制。
The difficulties of the model experiment for the flood detention area of the Phase IV of Shenzhen River Regulation Project are the uncertainties from the automatic control system of the unsteady flow and the control of the water level at the tail-gate of the downstream channel. Through the calculation with empirical formula and the roughening scheme for the optimized model of flume experiment,a control method with a composite weir arranged at the downstream tail-gate is adopted for realizing the self-fitting function of level-flow,and then the experimental study on the optimization of the structural type of the overflow weir,the linking mode between both the weir and the downstream embankment and the weir crest elevation of the flood detention area of Shenzhen River is made. The experimental result shows that the working efficiency of the design scheme is quite significant after the optimization,thus can be popularized to the similar model experiment of flood detention area concerned.
出处
《水利水电技术》
CSCD
北大核心
2015年第2期119-123,共5页
Water Resources and Hydropower Engineering
关键词
滞洪区
模型试验
方案优化
深圳河治理工程
flood detention region
model experiment
scheme optimization
Shenzhen River Regulation Project
