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Finite-element 3D modeling of stress patterns around a dipping fault
Lobatskaya, RM (Lobatskaya, R. M.)1; Strelchenko, IP (Strelchenko, I. P.)2; Dolgikh, ES (Dolgikh, E. S.)1
Source PublicationGEOSCIENCE FRONTIERS
2018-09-01
Volume9Issue:5 特刊:SIPages:1555-1563
DOI10.1016/j.gsf.2017.09.010
Abstract

Stresses in a block around a dipping fracture simulating a damage zone of a fault are reconstructed by finite-element modeling. A fracture corresponding to a fault of different lengths, with its plane dipping at different angles, is assumed to follow a lithological interface and to experience either compression or shear. The stress associated with the destruction shows an asymmetrical pattern with different distances from the highest stress sites to the fault plane in the hanging and foot walls. As the dip angle decreases, the high-stress zone becomes wider in the hanging wall but its width changes negligibly in the foot wall. The length of the simulated fault and the deformation type affect only the magnitude of maximum stress, which remains asymmetrical relative to the fault plane. The L-h/L-f ratio, where L-h and L-f are the widths of high-stress zones in the hanging and foot walls of the fault, respectively, is inversely proportional to the fault plane dip. The arithmetic mean of this ratio over different fault lengths in fractures subject to compression changes from 0.29 at a dip of 80 degrees to 1.67 at 30 degrees. In the case of shift displacement, ratios are increasing to 1.2 and 2.94, respectively. 

Subject Area地质学
WOS IDWOS:000442691400020
Language英语
Indexed BySCIE
KeywordInternal Structure Fractal Analysis Field Observations Zones Seismicity Fractures Japan
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
Cooperation Status国际
ISSN1674-9871
Department大陆碰撞与高原隆升重点实验室
PublisherCHINA UNIV GEOSCIENCES, BEIJING
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8556
Collection图书馆
Corresponding AuthorLobatskaya, RM (Lobatskaya, R. M.)
Affiliation1.Irkutsk Natl Res Tech Univ, 83 Lermontov Str, Irkutsk 664074, Russia;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, 16 Lincui Rd, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Lobatskaya, RM ,Strelchenko, IP ,Dolgikh, ES . Finite-element 3D modeling of stress patterns around a dipping fault[J]. GEOSCIENCE FRONTIERS,2018,9(5 特刊:SI):1555-1563.
APA Lobatskaya, RM ,Strelchenko, IP ,&Dolgikh, ES .(2018).Finite-element 3D modeling of stress patterns around a dipping fault.GEOSCIENCE FRONTIERS,9(5 特刊:SI),1555-1563.
MLA Lobatskaya, RM ,et al."Finite-element 3D modeling of stress patterns around a dipping fault".GEOSCIENCE FRONTIERS 9.5 特刊:SI(2018):1555-1563.
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