黏性细颗粒泥沙絮凝试验研究综述

Review on the flocculation test of cohesive sediment

黏性细颗粒泥沙因其粒径较小,具有胶体微粒特有的絮凝现象,其形成发展对泥沙运动、河口形态演变、水库淤积形态等都会产生较大的影响。鉴于泥沙絮凝机理的复杂性,现有成果有必要进一步完善和深入研究。在系统总结黏性细颗粒泥沙絮凝试验原理、研究方法、研究设备的基础上,整理了目前试验研究在絮凝沉降特性、影响因素、絮凝机理等方面取得的一些共性成果,结合工程实际情况,明确了加强细颗粒泥沙絮凝研究的具体方向和技术思路。

Cohesive fine sediment flocculation is an unique phenomenon due to its small particle size. The formation and development of flocculation will affect sediment movement, estuary morphology and reservoir deposition. In view of the complexity of the flocculation mechanism, the existing research results still need further improvement and study. The principle, methods, equipments, technologies and results obtained in the study on the flocculation test are systematically summarized and analyzed in this paper. Based on the summaries, the future research directions are proposed in order to further understand of the flocculation experimental study.