A laboratory study of rheological properties of mudflowsin Hangzhou Bay,China  

作　　者：Zhenhua HUANG Huhe Aode 

机构地区：[1]Asst. Prof., School of Civil and Environmental Engineering, Nanyang Technological University, Republic of Singapore, [phone] [2]Earth Observatory of Singapore, Nanyang Technological University, Republic of Singapore [3]Prof. Emeritus, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

出　　处：《International Journal of Sediment Research》2009年第4期410-424,共15页国际泥沙研究（英文版）

摘　　要：A laboratory study of the rheology of mudflows in Hangzhou Bay, China, is reported in this paper. Both the steady and oscillatory （dynamic） rheological properties are studied using RMS-605 rheometer. A Dual-Bingham model is proposed for analyzing flow curves and compared with Worrall-Tuliani model. It is found that Dual-Bingham plastic rheological model is easier to implement than Worrall-Tuliani model and can provide satisfactory representations of the steady mudflows in Hangzhou Bay and other published data. The dependence of the yield stress and viscosity on sediment concentration is discussed based on the data from Hangzhou Bay mud and other published data. For the dynamic rheologieal properties of Hangzhou Bay mud, empirical expressions for elastic modulus and dynamic viscosity are provided in the form of exponential functions of sediment volume concentration, and comparisons with other published data also discussed.A laboratory study of the rheology of mudflows in Hangzhou Bay, China, is reported in this paper. Both the steady and oscillatory （dynamic） rheological properties are studied using RMS-605 rheometer. A Dual-Bingham model is proposed for analyzing flow curves and compared with Worrall-Tuliani model. It is found that Dual-Bingham plastic rheological model is easier to implement than Worrall-Tuliani model and can provide satisfactory representations of the steady mudflows in Hangzhou Bay and other published data. The dependence of the yield stress and viscosity on sediment concentration is discussed based on the data from Hangzhou Bay mud and other published data. For the dynamic rheologieal properties of Hangzhou Bay mud, empirical expressions for elastic modulus and dynamic viscosity are provided in the form of exponential functions of sediment volume concentration, and comparisons with other published data also discussed.

关 键 词：Mud rheology Cohesive sediments Rheological models MUDFLOWS Hangzhou Bay mud 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TP312[自动化与计算机技术—计算机软件与理论]