摘要
桩式透水丁坝是一种新型河道及航道整治建筑物,本文针对桩式透水丁坝群中对水流影响最大的前2座丁坝分别进行定床和动床模型试验,在前人研究的基础上,主要分析透水率的变化对双丁坝流场分布的影响规律,并运用Surfer软件绘制了河床地形图,探讨透水率变化对双丁坝局部冲淤的影响规律,发现第2座丁坝坝根附近的横向冲槽、坝头冲刷深度和坝后淤积体在发生程度上均弱于第1座丁坝;随透水率的增大,2座丁坝的坝头最大冲刷深度均减小,同时两坝间的淤积作用也减弱,不利于护岸促淤,推荐透水率为30%。
Permeable spur is a waterway regulation structure.The fixed bed and moving bed model tests were designed for the first two spurs.Based on previous studies,we analyzed the influence of water permeability on the flow distribution of the double spurs,drew the topographic map of the riverbed by using Surfer software,and studied the influence of water permeability on the local scouring and silting of the double spurs.The results showed that the lateral scour trough,scour depth and silting near the second spur root were weaker than the first;with the rise of permeation rate,the maximum scour depth decreased,and the deposition was reduced between the two spurs,which was not conducive to protecting the river banks.Permeability rate of 30% is recommended.
出处
《石河子大学学报（自然科学版）》
CAS
2013年第1期103-108,共6页
Journal of Shihezi University(Natural Science)
基金
石河子大学高层次人才启动资金专项(RCZX200937)
关键词
桩式透水丁坝
双丁坝
水流结构
透水率
冲淤特性
pile permeable spur
double spurs
flow structure
water permeability
scouring and silting character
