黄河泥沙的絮凝形态学和絮体构造模型问题  

Consideration on the Morphology and Floc Structure of the Yellow River Silt

作　　者：金同轨[1] 高湘[1] 张建锋[1] 王华军[1] 张树德[1] 陈保平[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《泥沙研究》2003年第5期69-73,共5页Journal of Sediment Research

基　　金：国家自然科学基金资助项目(50078043)

摘　　要：从黄河高浊度水在高分子絮凝剂作用下的干扰沉降现象出发,叙述了黄河泥沙颗粒与高分子聚合物链状分子间的吸附作用、黄河泥沙絮凝过程的比表面积模型。结合分形理论在絮凝形态学中的应用,对有限扩散凝聚、弹射凝聚和反应控制凝聚等三种凝聚模型进行了简介,同时讨论了絮体的分形和高分子聚合物的分形。文章对几种分形维数的计算方法作了简介。以黄河泥沙颗粒絮凝后形成的微小絮体为代表,讨论了絮体的构造模型,以及自由沉降和干扰沉降状态下,不同的絮体构造模型及模型的适用可能。Based on the hindered settling phenomena of the Yellow River high-turbidity water with polymer flocculant, this article discusses the interaction between silt particles from the Yellow River and molecule chain of the polymer, and the model of specific surface area in the flocculating process of the Yellow River silt particles. Combined with the application of fractal theory for flocculation morphology, three kinds of aggregation models are introduced. The fractal of flocs and the polymer molecule are disscused too. In addition, some kinds of calculation methods on the fractal dimension are introduced. Taking the microfloc formed with silt particles as an example, the floc structure models and the methods dealing with the different floc structure models at the condition of free settling and hindered settling are discussed. 

关 键 词：黄河 泥沙 絮凝形态学 絮体构造模型 分形 干扰沉降 

分 类 号：TV149[水利工程—水力学及河流动力学] O641[理学—物理化学]