摘要
通过对迷宫堰型圆中环沉沙排沙池进行物理模型试验并对比两种堰型的沉沙效果,得出其含沙量与沉沙的改善效果。迷宫堰型圆中环沉沙排沙池的含沙量沿垂向和径向的分布规律与光滑薄壁堰基本相同,并以流量Q=4.09 L/s(对应原型流量3 m3/s)时中心出水环不加高状态为例进行沉沙分析,得出溢流堰边壁内侧的平均含沙量比光滑堰的减小了16.5%,沉沙中小于0.1 mm的细颗粒泥沙明显增多,其中值粒径减小14.09%,出口沉沙的中值粒径相应减小了11.19%,说明调整为迷宫堰后能够有效地提高悬移质泥沙沉降率。
In the study of sediment problems, it obtained the flow of sediment concentration and sediment diversion planning features such asthe design had a significant role. In this paper, the weir optimized round central settling sediment pool, which named ring circle labyrinthweir type, did the physical model test and compared with the two wire types settling effect. The sediment distribution of ring circle labyrinthweir, along the vertical and radial, which is basically the same with smooth wire, and taking Q = 4.09 L/s center water outlet ring withoutheightening as an example to make the analysis on sand, the sediment inside of labyrinth weir decreases 16.5% in average than that of smoothweir. It is higher for less than 0.1mm of fine sediment than the smooth weir and the median grain size decreases 14.09%. And the outletsettling median diameter correspondingly reduces 11.19% , indicating the adjustment to the labyrinth weir can effectively improve thesuspended sediment sedimentation rate and improve the efficiency of agricultural irrigation.
出处
《人民黄河》
CAS
北大核心
2016年第8期20-23,共4页
Yellow River
基金
新疆维吾尔自治区自然科学基金资助项目(2014211B001)
关键词
含沙量
沉沙效果
沉沙排沙池
迷宫堰
sediment concentration
sediment desilting effect
desilting and sediment ejection basin
labyrinth weir
