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A Fractal Model for Characterizing Hydraulic Properties of Fractured Rock Mass under Mining Influence
Liu, Xiaoli1; Liang, Tao1; Wang, Sijing1,2; Nawnit, Kumar1
2019-12-20
Source PublicationGEOFLUIDS
ISSN1468-8115
Volume2019Pages:17
AbstractIn this paper, two basic assumptions are introduced: (1) The number and length distribution of fractures in fractured rock mass are in accordance with the fractal law. (2) Fluid seepage in the fractures satisfies the cubic law. Based on these two assumptions, the fractal model of parallel seepage and radial seepage in fractured rock mass is established, and the seepage tensor of fracture network which reflects the geometric characteristics and fractal characteristics of fracture network under two kinds of seepage is derived. The influence of fracture geometry and fractal characteristics on permeability is analyzed, and the validity and accuracy of the model are verified by comparing the calculated results of the theoretical model and physical model test. The results show that the permeability coefficient K of fracture network is a function of the geometric (maximum crack length Lmax, fractured horizontal projection length L0, diameter calculation section porosity phi, fracture strike alpha, and fracture angle theta) and fractal characteristics (fracture network fractal dimension Df and seepage flow fractal dimension DT). With the increase of fractal dimension Df, the permeability coefficient increases. With the increase of DT, the permeability coefficient decreases rapidly. And the larger the Df (Df>1.5), the greater the change of permeability coefficient K with DT.
DOI10.1155/2019/8391803
Funding OrganizationNational Key Research and Development Plan ; National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; National Key Research and Development Plan ; National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; National Key Research and Development Plan ; National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; National Key Research and Development Plan ; National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; Key Research and Development Plan of Ningxia Hui Autonomous Region
WOS KeywordPOROUS-MEDIA ; FLUID-FLOW ; PERMEABILITY ; NETWORKS ; PERCOLATION ; GEOMETRY
Language英语
Funding ProjectNational Key Research and Development Plan[2016YFC0501104] ; National Natural Science Foundation of China[51522903] ; National Natural Science Foundation of China[51479094] ; National Natural Science Foundation of China[41772246] ; Key Research and Development Plan of Ningxia Hui Autonomous Region[2018BCG01003]
Funding OrganizationNational Key Research and Development Plan ; National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; National Key Research and Development Plan ; National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; National Key Research and Development Plan ; National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; National Key Research and Development Plan ; National Key Research and Development Plan ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research and Development Plan of Ningxia Hui Autonomous Region ; Key Research and Development Plan of Ningxia Hui Autonomous Region
WOS Research AreaGeochemistry & Geophysics ; Geology
WOS SubjectGeochemistry & Geophysics ; Geology
WOS IDWOS:000522148600001
PublisherWILEY-HINDAWI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95491
Collection页岩气与地质工程院重点实验室
Corresponding AuthorLiu, Xiaoli
Affiliation1.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaoli,Liang, Tao,Wang, Sijing,et al. A Fractal Model for Characterizing Hydraulic Properties of Fractured Rock Mass under Mining Influence[J]. GEOFLUIDS,2019,2019:17.
APA Liu, Xiaoli,Liang, Tao,Wang, Sijing,&Nawnit, Kumar.(2019).A Fractal Model for Characterizing Hydraulic Properties of Fractured Rock Mass under Mining Influence.GEOFLUIDS,2019,17.
MLA Liu, Xiaoli,et al."A Fractal Model for Characterizing Hydraulic Properties of Fractured Rock Mass under Mining Influence".GEOFLUIDS 2019(2019):17.
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