Sedimentation process of saturated sand under impact loading

作     者：ZHANG Junfeng MENG Xiangyue 

作者机构：Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2005年第48卷第z1期

页      面：81-94页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 

基　　金：Special Funds for Major State Basic Research Project, (2002CB412706) Three Gorges Reservoir Areas, (4-5) National Natural Science Foundation of China, NSFC, (10372104) Chinese Academy of Sciences, CAS, (KJCX2-SW-L1-2) 

主　　题：sedimentation process, liquefaction, stability analysis, three-phase flow model. 

摘      要：The initial small inhomogeneity of saturated sand could be amplified during the sedimentation process after liquefaction, and cracks could be observed in the sand column. Layers of fine sand could also be found at the exact place where cracks developed and disappeared. The phenomena and the whole process were experimentally shown by X-rays images. To account for the phenomena, a linearized stability analysis of the sedimentation of saturated sand was conducted; however, it did not produce a satisfactory result. A three-phase flow model describing the transportation of fine sand is presented in this paper. It is shown that such a kind of erosion/deposition model was qualitatively in good agreement with the experimental observation.