| 裂隙岩体非饱和渗流的分形模型 |
| |
| 引用本文： | 任强,徐卫亚.裂隙岩体非饱和渗流的分形模型[J].岩土力学,2008,29(10):2735-2740. |
| |
| 作者姓名： | 任强 徐卫亚 |
| |
| 作者单位： | 河海大学 岩土工程研究所，南京 210098 |
| |
| 摘 要： | 基于毛细吸持理论和Sierpinski空间的假定，建立了用分维数表示的毛细压力-有效饱和度及毛细压力-相对渗透系数关系的裂隙岩体非饱和渗流分形模型。根据Monte-Carlo模拟技术由平硐资料生成三维裂隙网络，利用盒维数方法计算裂隙岩体体积分维数。探讨了分维数与裂隙渗透率的关系。结合糯扎渡水利工程实例，将模型计算结果与Brook-Corey模型对比，结果表明相对渗透率主要受最大裂隙开度的影响，当裂隙开度范围不大时，分形模型可较好描述岩体裂隙的毛细压力与有效饱和度的关系。当裂隙开度范围较大时， ，忽略最大裂隙开度，模型可以等价于Brook-Corey模型。
|
| 关 键 词： | 分形模型 非饱和渗流 三维裂隙网络 最大裂隙开度 |
| 收稿时间： | 2006-10-09 |
Fractal model for unsaturated seepage flow in fractured rock masses |
| |
| REN Qiang,XU Wei-ya.Fractal model for unsaturated seepage flow in fractured rock masses[J].Rock and Soil Mechanics,2008,29(10):2735-2740. |
| |
| Authors: | REN Qiang XU Wei-ya |
| |
| Affiliation: | Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China |
| |
| Abstract: | Based on the capillary theory and Sierpinski space hypothesis,a fractal model for unsaturated seepage in fractured rock masses of function among capillary pressure,effective water saturation and relative permeability coefficient is established.In order to provide evidence to unsaturated seepage flow theory,the box dimension method is studied according to the technique of Monte-Carlo three-dimensional network simulation.The relationship between fractal dimension and unsaturated permeability is studied.A calc... |
| |
| Keywords: | fractal model unsaturated seepage three-dimensional fracture network maximum fracture aperture |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
|
点击此处可从《岩土力学》下载全文 |
