恒温状态下孔隙度的相关研究

The study of porosity under constant temperature

从孔隙度的概念入手,分析了孔隙度的变化与外界应力及体积变形的关系。推导了由孔隙度表达的有效应力表达式,并将之代入纳维方程得到用孔隙度表示的岩体骨架位移方程。研究认为,地层中流体的流入或流出是一个变系数非线性固流耦合渗流过程。

Focusing on the concept of porosity, the paper analyzes the relationship between the change of porosity and distortion of volume, the effective stress expressed by porosity is developed, and the expression is introduced into the Navier＇s equation and the displacement equation of rock framework is got. Study shows that the inflow and flow-out conforms to a non-linear solid-fluid coupled equation with variable coefficients.