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研究断层泥力学性质对了解断层作用的力学状态可能是重要的。影响断层泥性质的因素包括围压(例如,Shimamoto和Logan,1981;Morrow,等1982),应变率(Logan,1978;Solberg和Byerlee,1981),水化和脱水(Logan等,1981),水饱和(Wang和Mao,1979;Morrow等,1982),颗粒大小和结构(Chu等,1981;Morrow,1982)。但是,用以充分地预测高压下粘土材料的时间相关变形的一般本构关系仍然是缺乏的。本文从实验上确定了圣安德烈斯断层泥和空气干燥的固结高岭土的时间相关的体积型本构关系。断层泥的体积应变是重要的,这不仅仅因为它在本构关系中是一种基本变量,而且也因为它
Studying the mechanical properties of faulted mud may be important for understanding the mechanical state of the fault. Factors that influence the properties of fault mud include confining pressure (eg, Shimamoto and Logan, 1981; Morrow, et al., 1982), strain rates (Logan, 1978; Solberg and Byerlee, 1981), hydration and dewatering (Logan et al., 1981), water Saturation (Wang and Mao, 1979; Morrow et al., 1982), particle size and structure (Chu et al., 1981; Morrow, 1982). However, the general constitutive relations used to adequately predict the time-dependent deformation of clay materials under high pressure are still lacking. This paper experimentally determines the time-dependent volumetric constitutive relation of San Andreas fault mud and air-dried consolidated kaolin. The volumetric strain of faulted mud is important not only because it is a fundamental variable in the constitutive relationship, but also because it