Numerical determination of the effective permeability coefficient of soil-rock mixtures using the numerical manifold method

被引：56
作者：
Chen, Tao [1 ,4 ]
Yang, Yongtao [1 ]
Zheng, Hong [2 ]
Wu, Zhijun [3 ]
机构：
[1] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
[2] Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
[3] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS | 2019年 / 43卷 / 01期
基金：
中国国家自然科学基金;
关键词：
effective permeability coefficient; Numerical manifold method (NMM); permeability; soil-rock mixtures (SRMs); CONTINUOUS NODAL STRESS; FINITE-ELEMENT-METHOD; FRACTURE PROPAGATION; CRACK-PROPAGATION; GENERATION; PARTITION;
D O I：
10.1002/nag.2868
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The present study extends the numerical manifold method to investigate the effective permeability coefficient (k(eff)) of soil-rock mixtures. The influence of rock content, rock size, rock shape, and rock blocks' major axis direction on k(eff) is studied. The results show the following: (1) k(eff) decreases as the rock content increases; (2) the influence of rock size on k(eff) can be neglected if other parameters are fixed; (3) the values of k(eff) are nearly the same if rock blocks are in circular or regular hexagon shapes; and (4) the major axis direction of rock blocks has some influence on k(eff).
引用
收藏
页码：381 / 414
页数：34
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