裂隙岩体随机渗流模型及数值分析

Stochastic Seepage Model and Mathematical Analysis of Jointed Rock Masses

基于等效连续介质模型 ,先应用Taylor展开法分析裂隙岩体渗透性的随机性与裂隙基本几何参数随机性的关系 ,然后用一阶Taylor展开随机有限元法分析裂隙岩体渗流场的随机性。数值分析表明 :隙宽的随机性对渗流场的影响最大 ,裂隙的迹长次之 ,间距的影响最小。数值分析的结果是合理的。

Based on the equivalent continuum model, the relationship between the stochastic level of permeability of rock masses and that of basic geometric parameters of joints is analyzed by Taylor series method, and the stochastic level of the seepage field is analyzed. The results of mathematical simulation show that the influence of aperture to seepage field is larger than that of traces and spacings. The results are credible.