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充满流体的多孔地质介质的基本状态,与干燥多孔介质的基本状态是明显不同的。干燥介质的大部分变形是非弹性的且与时间无关。可是,孔隙流体的存在以下面两种方式影响介质的特性。当加荷速率低时,由孔隙流体流动引起的排水导致一个固有时间的依赖性。在地面沉降或固结时看到了这个现象。当加荷速率高时(如地震),在介质的特性中,流体流动即排出的水是微不足道的,但孔隙压力的增大成为重要的。目前的分析是在无排水扰动的情况下推导的。
The basic state of a fluid-filled porous geological medium is clearly different from the basic state of a dry porous medium. Most of the deformation of the drying medium is inelastic and independent of time. However, the presence of pore fluid influences the properties of the medium in the following two ways. When the loading rate is low, the drainage caused by the pore fluid flow results in an intrinsic time dependence. This phenomenon is seen when the ground is settled or consolidated. When the loading rate is high (such as earthquakes), the fluid flow, ie the discharged water, is insignificant in the characteristics of the medium, but the increase in pore pressure becomes important. The current analysis was deduced without disturbance of drainage.