摘要
通过水槽试验研究了山区大比降河流入汇口淤积情况,探讨了入汇角为60°时泥沙淤积的形态及泥沙淤积与水流、输沙率的关系。试验结果表明,泥沙的淤积位置与淤积体高点随汇流比的变化而变化,泥沙淤积抬高入汇口上游的水位且随汇流比增大抬升越明显,亦增加了河道推移质输沙率。
The sediment deposition of large gradient of open channel confluence at junction angle 60° with different discharge ratios are studied in the channel model test. The test results show that the location of sediment deposition and the high-point of deposition changes with different discharge ratios;the sediment deposition raises the upstream water lev- ell as the discharge ratio increases, the lifting height is more obvious; at the same time, the lifting water level will impact on the transport sediment rate of the bed-load.
出处
《水电能源科学》
北大核心
2011年第8期75-76,212,共3页
Water Resources and Power
基金
国家自然科学基金资助项目(50809079)
关键词
大比降
入汇型河道
入汇口
泥沙淤积
水位
large gradient
confluence river
confluence
sediment deposition
water level
