MRT-LBM-based numerical simulation of seepage flow through fractal fracture networks

doi:10.1007/s11431-013-5402-3

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	MRT-LBM-based numerical simulation of seepage flow through fractal fracture networks
	Fan Huo 1,2,3; Zheng Hong 1
刊名	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
	2013
卷号	56 期号:12 页码:3115-3122
关键词	MRT-LBM fractal interpolation fracture networks seepage flow simulation microcosmic mechanism
ISSN号	1674-7321
DOI	10.1007/s11431-013-5402-3
英文摘要	The study on seepage flow passing through single fractures is essential and critical for understanding of the law of seepage flow passing through fracture networks and the coupling mechanisms of seepage field and stress field in rock masses. By using the fractal interpolation to reconstruct a natural coarse fracture, as well as taking into account the microstructure of the fracture, the numerical simulation of seepage flow passing through the coarse fractures with two distinct vertical scaling factors is conducted based on the MRT-LBM model of the lattice Boltzmann method. Then, after obtaining the length of the preferential flow pathway, the permeability of the two kinds of fractures is estimated respectively. In view of difficulties in locating the preferential flow pathway of natural fracture networks, by numerical tests a transect permeability weighted algorithm for estimating the fracture network permeability is proposed. The algorithm is not specific to one or more particular preferential flow pathways, but considers the contribution of each section to hinder the fluid passing through the medium. In order to apply the new algorithm, by capturing the structure of fracture networks based on the image-processing technique, the numerical simulations of seepage flow passing through two groups of natural fracture networks is carried out, the permeability is forecasted and the partial flows are reproduced for both cases. It is found that the preferential flow pathway emerges at the beginning of evolution, then is strengthened subsequently, and finally reaches a steady status. Furthermore, by using the proposed method some details on local flow can be clearly observed such as backflows and vortices at local branches can exist simultaneously and so forth, suggesting the validness of the proposed method for multiscale simulations of seepage flow.
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000328263600025
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3532]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Chinese Acad Sci, Inst Mt Hazards & Environm; 3.Univ Chinese Acad Sci
推荐引用方式 GB/T 7714	Fan Huo,Zheng Hong. MRT-LBM-based numerical simulation of seepage flow through fractal fracture networks[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2013,56(12):3115-3122.
APA	Fan Huo,&Zheng Hong.(2013).MRT-LBM-based numerical simulation of seepage flow through fractal fracture networks.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,56(12),3115-3122.
MLA	Fan Huo,et al."MRT-LBM-based numerical simulation of seepage flow through fractal fracture networks".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 56.12(2013):3115-3122.