泥沙流变学及其应用  

Sediment rheology and its applications

作　　者：喻国良[1] 杨闻宇[1] 洪国军 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]中交上海航道勘察设计研究院有限公司中交疏浚技术重点实验室,上海200120

出　　处：《水利水电技术》2014年第1期130-135,共6页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金项目(51179101)资助

摘　　要：本文将流变学的研究方法应用于泥沙问题的研究,提出泥沙流变学,将其作为泥沙学的一个分支科学,倡导从流变学的角度研究在外力作用下泥沙的流动和变形规律,以及其自身结构的变化,以期为工程领域以及自然现象中的一些问题提出新的解决途径。本文以长江口泥沙样本为例,对其流变特性进行了测量,展示了触变性和剪切变稀行为,以及相态转变的4个分区。The research method of the rheology is herein applied to the study of the sediment problem,and then the sediment rheology is put forward and is taken as a branch of the sedimentology.It advocates to study the transport and deformation law of sediment under the action of external force and the change of the self-structure,so as to propose a new approach to solve the problems from the engineering field and the natural phenomena concerned.By taking the sediment sample from the estuary of the Yangtze as case,the rheological characteristics of it is measured,from which the thixotropy and shear thinning behavior as well as the four subzones of the phase transition of it are exhibited.

关 键 词：泥沙流变学 粘性泥沙 剪切变稀 触变行为 浮泥 

分 类 号：TV14[水利工程—水力学及河流动力学]