红黏土三维孔隙结构建模与渗透性能分析

为探讨土的微观孔隙网络和渗流,通过高斯随机场二相化理论来表征孔隙介质基质与孔隙的方法,构建了满足真实土体孔隙率和孔径分布,且具有随机形态的三维孔隙模型。基于所建模型,采用数学形态学图像分析方法,提取与渗流有关的参数,并采用Kozeny-Carman方程计算了模型的渗透率。结果表明：与实验数据相比结果相近,验证了该方法的可行性。研究结果为孔隙介质微观建模与渗流分析提供了一种新的思路与方法。

Three dimensional pore structure modeling and permeability of red clay

In order to explore the micro pore network and seepage of soil, the method of characterizing the matrix and pore of porous medium by the binary theory of Gauss random field is used to construct a three-dimensional pore model with random shape, which satisfies the real soil porosity and pore size distribution. Based on the established model, the mathematical morphology image analysis method is used to extract the parameters related to seepage, and the permeability of the model is calculated by Kozeny Carman equation. The results show that the results are close to the experimental data, which verifies the feasibility of the method. It is concluded that the research provides a new idea and method for micro modeling and seepage analysis of porous media.