中文摘要：

以前的孔模型被显示了不能精确地描述岩石和土壤的毛孔尺寸分发。三个新孔模型在这研究被开发。软泥土和生态型的被覆材料的毛孔尺寸分布在二维的空间用一台扫描电子显微镜(SEM ) 被获得，并且与在三维的空间的水银侵入方法。结果证明新孔模型在预言岩石和土壤样品的积聚的孔是有效的。基于新孔模型，一个新微观结构土壤巩固模型被开发，压缩种类预言的错误在低压力下面是不到 0.007。为土壤水保留曲线的几个模型被成立，它处于良好的竟技状态包括另外的研究人员开发的以前的模型，并且因为有效平均数，他们可能是比以前的模型更精确的。另外，我们为在土壤结合和测试标本尺寸之间，以及在岩石和土壤和测试标本尺寸的体积密度之间的关系获得表情。

英文摘要：

Previous porosity models have been shown to be unable to accurately describe the pore-size distribution of rocks and soils. Three new porosity models are developed in this study. Pore-size distributions of soft clay and ecotypic revetment material were obtained using a scanning electron microscope （SEM） in two-dimensional space, and with the mercury intrusion method in three-dimensional space. The results show that the new porosity models are valid in predicting the accumulative porosity of rock and soil samples. Based on the new porosity models, a new microstructure soil consolidation model was developed and the error of the compression strain prediction was less than 0.007 under low pressure. Several models for soil water retention curve were founded, which in form comprise previous models developed by other researchers, and they may be more accurate than previous models because of the valid mean for determining the fractal dimension. In addition, we obtain an expression for the relationship between soil cohesion and the test specimen size, as well as between the bulk density of rocks and soils and the test specimen size.