IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2012  > Vol9 No.6
Deformation and Failure Mechanism of Phyllite under the Effects of THM Coupling and Unloading
MENG Lubo; LI Tianbin; XU Jin; CHEN Guoqing; MA Hongming; YIN Hongyu
Corresponding AuthorLI Tianbin
2012-12
Source PublicationJournal of Mountain Science
Volume9Issue:6Pages:788-797
AbstractAlthough the study of TM (Thermo - Mechanics), HM (Hydraulic - Mechanics) and THM (Thermo - Hydraulic - Mechanics) coupling under a loading test have been under development, rock failure analysis under THM coupling and unloading is an emerging topic. Based on a high temperature triaxial unloading seep test for phyllite, this paper discusses the deformation and failure mechanism of phyllites under the “HM, TH, TM” incomplete coupling model with unloading conditions. The results indicate that the elastic modulus and initial permeability decrease and the Poisson’s ratio increases with increasing temperature; the elastic modulus decreases and the Poisson’s ratio and initial permeability increase with increasing water pressure. During the unloading process, rock penetrability is small at the initial elastic deformation phase, but the penetrability increases near the end of the elastic deformation phase; mechanisms involving temperature and water pressure affect penetrability differently. Phyllite failure occurs from the initial thermal damage of the rock materials, splitting and softening (which is caused by pore water pressure), and the pressure difference which is formed from the loading axial pressure and unloading confining pressure. The phyllite failure mechanism is a transtensional (tension – shearing) failure.
KeywordPhyllite Mechanical Characteristics Penetrability Failure Mechanism Loading Test Thermo-hydraulic-mechanics (Thm)
DOI10.1007/s11629-012-2286-9
Indexed BySCI
Language英语
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5149
CollectionJournal of Mountain Science_Journal of Mountain Science-2012_Vol9 No.6
Corresponding AuthorLI Tianbin
Recommended Citation
GB/T 7714
MENG Lubo,LI Tianbin,XU Jin,et al. Deformation and Failure Mechanism of Phyllite under the Effects of THM Coupling and Unloading[J]. Journal of Mountain Science,2012,9(6):788-797.
APA MENG Lubo,LI Tianbin,XU Jin,CHEN Guoqing,MA Hongming,&YIN Hongyu.(2012).Deformation and Failure Mechanism of Phyllite under the Effects of THM Coupling and Unloading.Journal of Mountain Science,9(6),788-797.
MLA MENG Lubo,et al."Deformation and Failure Mechanism of Phyllite under the Effects of THM Coupling and Unloading".Journal of Mountain Science 9.6(2012):788-797.
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