期刊文献+

土体孔隙分形模型及其与土体渗透性关系的研究 被引量:3

Study of Soil Mass Pore Fractal Model and Its Relation to Soil Mass Permeability
下载PDF
导出
摘要 土体颗粒和孔隙分布直接影响土体渗透性大小。文章引入分形几何理论,基于土颗粒粒度的分维系数和球形土颗粒的假设,确定了单位体积土体中土颗粒的总数以及孔隙的总表面积,进而建立土体孔隙比表面积分形模型。该模型包括的四个参数可由实验方法确定。实例分析结果证明,土体的渗透系数随孔隙比表面积增大而逐渐减小,这与渗流分析结果一致。验证了模型的合理性和可行性,为土体渗透性的研究提供了一种新的方法。 The distribution of soil grains and pores in soil mass directly influence the permeability of soil mass. In this paper the theory of fractal geometry was introduced, and the total number of soil grains and the total surface area of pores per unit volume of soil mass were calculated based on the soil grain fractal coefficient and the hypothesis, in which the soil grain was assumed to be spherical, and then the pore surface area - volume ratio fractal model of soil mass was established. The four parameters involved in the model can be determined by experiment. The example analysis result show that the permeability coefficient of the soil mass decreases with the increase of its pore surface area- volume ratio. It is consistent with the seepage analysis result. The model proved to be rational and feasible, and has provided a new method for study of permeability of .soil mass.
出处 《云南水力发电》 2005年第6期21-24,46,共5页 Yunnan Water Power
基金 云南省自然科学基金资助项目(2004E0023M)
关键词 土体孔隙比表面积 分形模型 土颗粒的分维系数 渗透系数 pore surface area - volume ratio of soil mass fractal model fractal coefficient of soil mass permeability coefficient
  • 相关文献

参考文献6

二级参考文献22

  • 1刘松玉,方磊,陈浩东.论我国特殊土粒度分布的分形结构[J].岩土工程学报,1993,15(1):23-30. 被引量:69
  • 2徐永福.应力路径对砂的强度的影响[J].水利水电科技进展,1996,16(2):64-65. 被引量:1
  • 3MANDELBROT B B.The fractal geometry of nature[M].San Francisco:Free man,1982.
  • 4PFEIFER P,AVNIR D.Chemistry nonintegral dimensions between two and three[J].J Chem Phys,1983,79(7):3369-3558.(下转第114页)[3] KATZ A J,THOMPSON A H.Fractal sandstone pores:implication for conductivity and formation[J].Phys Rev Lett,1985,54(3):1325-1328.
  • 5KROHN C E.Sandstone fractal and Euclidean pore volume distribution[J].Geophys Res,1988,93(B4):3286-3296.
  • 6KROHN C E.Fractal measurements of sandstone,shales and carbonates[J].Geophys Res,1988,93(B4):3297-3305.
  • 7ANGULO R F,ALVARADO V and GONZALEZ H.Fractal dimensions from mercury intrusion capillary tests[R].SPE 23695,1992.
  • 8KATZ AJ,THOMPSON AH.Fractal sandstone pores:implication for conductivity and formation[J].Phys Rev Lett,1985,54(3):1325-1328
  • 9徐永福,史春乐.用土的分形结构确定土的水份特征曲线[J].岩土力学,1997,18(2):40-43. 被引量:21
  • 10王永焱,中国黄土的结构特征及物理力学性质,1990年

共引文献243

同被引文献26

引证文献3

二级引证文献21

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部