黏性泥沙絮凝研究进展  

Advances in Research of Cohesive Sediment Flocculation

作　　者：柴朝晖[1,2,3] 李昊洁[4] 王茜[1] 杨国录[5] 刘同宦[1] 

机构地区：[1]长江科学院河流研究所,武汉430010 [2]清华大学土木水利学院,北京100084 [3]清华大学水沙科学与水利水电工程国家重点实验室,北京100084 [4]长江科学院科研计划处,武汉430010 [5]武汉大学水资源与水电工程科学国家重点试验室,武汉430072

出　　处：《长江科学院院报》2016年第2期1-9,18,共10页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金项目(51339001);长江科学院中央级公益性科研院所基本科研业务费资助项目(CKSF2016010/HL)

摘　　要：黏性泥沙颗粒的絮凝特性表现出与粗颗粒泥沙迥异的物理及输移特性,因此黏性泥沙絮凝是河流海洋泥沙理论研究中的热点之一。总结了黏性泥沙絮凝在试验研究和数学模型方面的研究成果,介绍了最新的相关研究进展,并分析了现有研究中存在的问题。认为目前存在的主要问题有:(1)有关黏性泥沙的试验研究以单因素影响试验为主,缺少多因素影响研究;(2)对泥沙絮团的三维结构形态研究不足;(3)相关数学模型只能描述定性规律。今后应在黏性泥沙相似准则、多因素影响试验、絮团微观结构观测仪器开发、大尺度三维絮凝数值模拟等方面加强研究。Because of flocculation character of cohesive sediment particle,the particle is different from coarse sediment particle in physical and transport properties. Therefore,the flocculation of cohesive sediment is a hotspot in the theoretical research of river and ocean sediment. In this paper,we summarize research results of cohesive sediment flocculation according to experiments and mathematical models,and introduce advances in the research up to date,as well as existing problems in these studies. There are 3 problems should be paid attention to： 1） experimental studies are mainly focused on single influencing factor,lack of multi-factor research; 2） pattern researches on 3-D structure of sediment flocs are not enough; 3） relevant mathematical models can only describe qualitative laws,rather than quantitative laws. Finally,we should strengthen some aspects in future study on the flocculation of cohesive sediment,such as similarity criteria,multi-factor experiment research,and 3D simulation on large scale.

关 键 词：黏性泥沙 絮凝试验 数学模型 分形 研究进展 

分 类 号：TV142.1[水利工程—水力学及河流动力学]