斜板式水沙分离装置中泥沙水力沉速特性研究  

Research on the Sediment Hydraulic Settling Velocity Feature of the Water-Sediment Separator of Inclined Plates

作　　者：董玉萍[1] 牟献友[1] 文恒[1] 郝中保[1] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,内蒙古呼和浩特010018

出　　处：《人民黄河》2013年第8期28-30,共3页Yellow River

基　　金：国家自然科学基金资助项目(50669001)

摘　　要：为探明斜板式水沙分离装置中的泥沙沉降特性,设计了由3个不同斜板间距的水槽串联组成的试验装置,通过量测该模型装置溢流口的泥沙中值粒径,并结合泥沙沉降半经验公式,对装置中泥沙的群体沉速特性进行了分析研究。结果表明:装置中每一级斜板的截留速度均比泥沙群体沉速小,泥沙均能发生沉降;每一级斜板能够分离出的最小的泥沙中值粒径计算值与现场实测值非常接近。To ascertain the sediment falling velocity properties of the water-sediment separator of inclined plates, the experiment designed an experi- mental device composed in series of sink with three different inclined plate spacings. The experiment researched and analyzed the sediment group falling velocity properties by measuring the sediment median sizes of overflow port, then combining sediment falling semiempirical formula. The re- suits show that： every-level-inclined plate interception velocity is smaller than sediment group falling velocity, all the sediment can fall in the de- vice; the minimum sediment median size separated by every-level inclined plate is very close to measured value.

关 键 词：沉降特性 水力沉速 斜板式装置 水沙分离装置 

分 类 号：TV149[水利工程—水力学及河流动力学]