Numerical study on the effect of meso-structure on hydraulic conductivity of soil-rock mixtures

被引：40

作者：

Wang, Tie ^{[1
]}

Yan, Chengzeng ^{[1
,2
]}

Zheng, Yuchen ^{[1
]}

Jiao, Yu-Yong ^{[1
]}

Zou, Junpeng ^{[1
]}

机构：

[1] China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China

[2] China Univ Geosci, Int Joint Res Ctr Deep Earth Drilling & Resource D, Wuhan 430074, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2022年 / 146卷

基金：

中国国家自然科学基金;

关键词：

Soil-rock mixtures; Effective hydraulic conductivity; Meso-structure; Pore seepage model; Rock content; DISCRETE ELEMENT METHOD; EFFECTIVE THERMAL-CONDUCTIVITY; FRACTURE PROPAGATION; CRACK-PROPAGATION; SEEPAGE ANALYSIS; POROUS-MEDIA; PORE SEEPAGE; MODEL; PERMEABILITY; SIMULATION;

D O I：

10.1016/j.compgeo.2022.104726

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Meso-structure of soil-rock mixture (SRM) has a great influence on its hydraulic conductivity. However, the potential relationship between them has not been systematically studied. In order to reveal the effect of mesostructure on seepage characteristics of soil-rock mixtures (SRMs), the pore seepage model based on the finite discrete element method (FDEM) is used to predict the effective hydraulic conductivity (k(eff)) of soil-rock mixtures in this paper. Firstly, the model is verified through a simple example. Then, the effects of rock size, content, shape, angle, distribution, and mixed two different shapes of rock blocks on k(eff) of SRMs are investigated. Finally, the seepage failure pattern of soil-rock mixtures is predicted according to the seepage flow velocity obtained by the simulation results. The approach in this study provides a new quantitative tool for determining the effective hydraulic conductivity of soil-rock mixtures and has a wide range of engineering application prospects.

引用

页数：27

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