黏性泥沙絮凝影响因素研究综述  

A Review of Factors Affecting the Flocculation of Cohesive Sediment

作　　者：李旺[1,2] 祖波[1,2] 李振亮[3] 王军[1,2] 

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学水环境研究院,重庆400074 [3]重庆市环境科学研究院,重庆400074

出　　处：《人民珠江》2018年第2期8-13,共6页Pearl River

基　　金：国家自然科学基金资助项目(51609028);重庆市研究生科研创新项目(CYS17214;CYS16182)

摘　　要：黏性泥沙絮凝是泥沙动力学中的一个重要课题,由于自然水体中泥沙颗粒分布很广、水体环境不断变化,水温、盐度、流速、水环境等会对黏性泥沙絮凝产生各种影响,故对于各因素对絮凝的影响机理和影响效果的研究就十分重要。从微观角度介绍了黏性泥沙絮凝的机制,基于其絮凝机制,从泥沙特性、环境介质、环境动力这几个大方面出发,进一步讨论了各种影响因子(水流紊动,矿物种类,泥沙浓度,泥沙粒径及形态、离子、微生物等)对泥沙絮凝的过程的影响效果,并分析了现有研究中存在的不足。Cohesive sediment flocculation is an important issue in sediment dynamics. Because of the wide distribution of sediment particles in natural water bodies and the continuous changes in water environment, the water temperature, salinity, flow rate and water environment will have various effects on the flocculation of cohesive sediment. Therefore, it is very important to study the mechanism and effect of each factor on flocculation. In this paper, the mechanism of cohensive sediment flocculation was introduced from the microscopic perspective. Based on the flocculation mechanism, the effects of various influencing factors( water turbulence, mineral species,sediment concentration, sediment size and morphology, ions, microorganisms, etc.) on the process of sediment flocculation were discussed from the aspects of sediment characteristics, environmental media and environmental power. Also, it analyzed the shortcomings in the existing researches.

关 键 词：泥沙絮凝 模拟 絮体 综述 

分 类 号：TV142[水利工程—水力学及河流动力学]