弹性多孔介质中一维孔隙压力的生成

考虑到弹性多孔介质的渗透系数依赖于孔隙改变的特点，给出渗流耦合问题的基本方程；用初始层校正法求出了一维孔隙压力生成的摄动解；实例计算表明渗流的非线性对孔隙压力分布模式有明显影响。最后介绍了测量孔隙压力生成过程中流出试佯的非稳定流量，确定弹性多孔介质渗透系数的方法，测试时间大大小于传统的稳定渗流方法。

Set up of the one-dimensional pore pressure in Poroelastic media

Accounting for the character that the permeability of poroelastic media varies with its deformation, the governing equations on the interacting media of fluid and solid are established. The asymptotic solution for the generation of one dimensional pore pressure is obtained by applying initial layer correcting method. The case calculations indicate that the non linearity of the flow has an important role upon the distribution of pore pressure. Finally, a method determining the permeability of poroelastic medial according to the unstable discharge of fluid from the top end of specimen is introduced; the method takes much less measuring time than traditional laboratory method.