Formation mechanism of cracks in saturated sand  

作　　者：Xiaobing Lu Zhemin Zheng Yongren Wu 

机构地区：[1]Wu Institute of Mechanics, Chinese Academy of Sciences. Beijing 100080, China

出　　处：《Acta Mechanica Sinica》2006年第4期377-383,共7页力学学报（英文版）

基　　金：The project supported by the National Natural Science Foundation of China (40025103 and 10202024);Key Laboratory of Mountain Hazards and Surface Process, Chinese;Academy of Sciences. The English text was polished by Keren Wang

摘　　要：The formation mechanism of ＂water film＂ （or crack） in saturated sand is analyzed theoretically and numerically. The theoretical analysis shows that there will be no stable ＂water film＂ in the saturated sand if the strength of the skeleton is zero and no positions are choked. It is shown by numerical simulation that stable water films initiate and grow if the choking state keeps unchanged once the fluid velocities decrease to zero in the liquefied sand column. The developments of ＂water film＂ based on the model presented in this paper are compared with experimental results.The formation mechanism of ＂water film＂ （or crack） in saturated sand is analyzed theoretically and numerically. The theoretical analysis shows that there will be no stable ＂water film＂ in the saturated sand if the strength of the skeleton is zero and no positions are choked. It is shown by numerical simulation that stable water films initiate and grow if the choking state keeps unchanged once the fluid velocities decrease to zero in the liquefied sand column. The developments of ＂water film＂ based on the model presented in this paper are compared with experimental results.

关 键 词：Saturated sand Cracks LIQUEFACTION 

分 类 号：O34[理学—固体力学]