摘要
岩土介质是晶粒状材料,存在大量的孔隙。这些孔隙的存在严重地影响岩土介质的力学、物理和化学性能。大量的研究表明,岩土介质的孔隙几何从原子尺度到晶粒尺寸范围内均表现出分形特征。目前分形几何已被广泛应用来研究岩土的孔隙率,输运特性和渗透性等等。本文从5个方面来讨论岩土介质的分形孔隙和分形粒子:①分形几何简介;②孔隙介质的分形模型;③岩土介质的分形孔隙特性和它们的分形量测方法;④岩土的分形粒子;⑤水土保持估计中的分形毛细管模型。
Rock and soil materials consist of grains and pores. They arc natural porous media. The presence of pores strongly a＃ects mechanical, physical and chemical properties of the rock and soil materials. Research results indicate that the pore geometry of the rock and soil shows the fractal behavior over the range from atom scale to grain size. So far, fractal geometry has been widely applied to study the porosity, permeability and percolation properties of the rock and soil, and other materials. In this paper, we will discuss fractal pores and fractal particles of rock and soil materials in the following five parts: (1) Introduction of fractal geometry; (2) Fractal models of porous media; (3) Fractal pore behavior of rock and soil, and fractal measurement methods; (4) Fractal particles of rock and soil; (5) Fractal capillary tube model in soil water retention estimation.
出处
《力学进展》
EI
CSCD
北大核心
1993年第2期145-164,共20页
Advances in Mechanics
基金
国家教委博士点基金
国家科委重大基础性理论课题 "非线性科学"项目
关键词
岩土介质
分形
孔隙
粒子
水土保持
rock and soil materials
fractal
pores
particles
soil water retention
