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Stability analysis of fractured rock mass around underground excavations based on a three-dimensional discrete fracture network
Wei, Siyu1; Li, Yanyan2; Shang, Yanjun3; Sun, Yuanchun4; Li, Kun5
2022-02-01
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
Volume81Issue:3Pages:13
AbstractUnderground excavation often encountered rock masses embedded with pre-existing fractures. Conventional excavation analysis was generally based on a continuum description. In this study, to investigate the influence of randomly distributed discrete fractures on underground excavation, a finite element modeling approach based on a three-dimensional (3D) discrete fracture network (DFN) was utilized. The influence of fracture parameters including fracture intensity, dip angle and strike on the surrounding rock stability was considered in the simulation. The results suggested that fractures caused complexity in terms of the deformation behavior of rock masses around the underground cavern, facilitated the instability of surrounding rock. The intensity, dip angle and strike of fractures had different effects on the stress, displacement and failure modes of the jointed rock masses. The fracture intensity mainly affected the magnitudes of the induced stress and displacement of surrounding rock masses: a larger stress concentration and heterogeneous distribution were more likely to occur in rock masses with lower fracture intensity. While the dip angle and strike of fractures showed more impact on the distribution of displacement and failure modes of surrounding rock masses, especially for those on the roof and sidewall.
KeywordFracture In-situ stress Discrete fracture network Surrounding rock stability
DOI10.1007/s12665-021-10145-3
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
WOS KeywordTUNNEL ; ISSUES
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[41602327]
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000745452700002
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/103999
Collection页岩气与地质工程院重点实验室
Corresponding AuthorLi, Yanyan
Affiliation1.China Geol Survey, Oil & Gas Survey, Beijing 100083, Peoples R China
2.Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
4.China Railway Design Corp, Tianjin 300251, Peoples R China
5.Minist Water Resources, Gen Inst Water Resources & Hydropower Planning &, Beijing 100120, Peoples R China
Recommended Citation
GB/T 7714
Wei, Siyu,Li, Yanyan,Shang, Yanjun,et al. Stability analysis of fractured rock mass around underground excavations based on a three-dimensional discrete fracture network[J]. ENVIRONMENTAL EARTH SCIENCES,2022,81(3):13.
APA Wei, Siyu,Li, Yanyan,Shang, Yanjun,Sun, Yuanchun,&Li, Kun.(2022).Stability analysis of fractured rock mass around underground excavations based on a three-dimensional discrete fracture network.ENVIRONMENTAL EARTH SCIENCES,81(3),13.
MLA Wei, Siyu,et al."Stability analysis of fractured rock mass around underground excavations based on a three-dimensional discrete fracture network".ENVIRONMENTAL EARTH SCIENCES 81.3(2022):13.
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