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Numerical determination of the effective permeability coefficient of soil–rock mixtures using the numerical manifold method
Author(s) -
Chen Tao,
Yang Yongtao,
Zheng Hong,
Wu Zhijun
Publication year - 2019
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.2868
Subject(s) - permeability (electromagnetism) , geology , geotechnical engineering , mineralogy , chemistry , membrane , biochemistry
Summary 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 .