Failure Behavior of Granite Affected by Confinement and Water Pressure and Its Influence on the Seepage Behavior by Laboratory Experiments

doi:10.3390/ma10070798

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院页岩气与地质工程重点实验室

	Failure Behavior of Granite Affected by Confinement and Water Pressure and Its Influence on the Seepage Behavior by Laboratory Experiments
	Cheng, Cheng 1,2; Li, Xiao 1,2; Li, Shouding 1,2; Zheng, Bo 1
刊名	MATERIALS
	2017-07-01
卷号	10 期号:7
关键词	granite material failure behavior seepage behavior confinement water pressure
ISSN号	1996-1944
DOI	10.3390/ma10070798
文献子类	Article
英文摘要	Failure behavior of granite material is paramount for host rock stability of geological repositories for high-level waste (HLW) disposal. Failure behavior also affects the seepage behavior related to transportation of radionuclide. Few of the published studies gave a consistent analysis on how confinement and water pressure affect the failure behavior, which in turn influences the seepage behavior of the rock during the damage process. Based on a series of laboratory experiments on NRG01 granite samples cored from Alxa area, a candidate area for China's HLW disposal, this paper presents some detailed observations and analyses for a better understanding on the failure mechanism and seepage behavior of the samples under different confinements and water pressure. The main findings of this study are as follows: (1) Strength reduction properties were found for the granite under water pressure. Besides, the complete axial stress-strain curves show more obvious yielding process in the pre-peak region and a more gradual stress drop in the post-peak region; (2) Shear fracturing pattern is more likely to form in the granite samples with the effect of water pressure, even under much lower confinements, than the predictions from the conventional triaxial compressive results; (3) Four stages of inflow rate curves are divided and the seepage behaviors are found to depend on the failure behavior affected by the confinement and water pressure.
WOS关键词	RADIOACTIVE-WASTE DISPOSAL ; PORE PRESSURE ; CRACK-PROPAGATION ; PERMEABILITY TENSOR ; CONFINING PRESSURE ; FLUID PERMEABILITY ; NUCLEAR-WASTE ; ROCK ; FRACTURE ; STRENGTH
WOS研究方向	Materials Science
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000406683000115
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030301 ; National Natural Science Foundation of China(41402286) ; High-Level Radioactive Waste Disposal Project of the State Administration for Science, Technology and Industry for National Defense, China ; National Key Scientific Instrument and Equipment Development Projects(41227901) ; XDA14040401) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030301 ; National Natural Science Foundation of China(41402286) ; High-Level Radioactive Waste Disposal Project of the State Administration for Science, Technology and Industry for National Defense, China ; National Key Scientific Instrument and Equipment Development Projects(41227901) ; XDA14040401) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030301 ; National Natural Science Foundation of China(41402286) ; High-Level Radioactive Waste Disposal Project of the State Administration for Science, Technology and Industry for National Defense, China ; National Key Scientific Instrument and Equipment Development Projects(41227901) ; XDA14040401) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030301 ; National Natural Science Foundation of China(41402286) ; High-Level Radioactive Waste Disposal Project of the State Administration for Science, Technology and Industry for National Defense, China ; National Key Scientific Instrument and Equipment Development Projects(41227901) ; XDA14040401)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/61826]
专题	地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者	Li, Xiao
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Cheng,Li, Xiao,Li, Shouding,et al. Failure Behavior of Granite Affected by Confinement and Water Pressure and Its Influence on the Seepage Behavior by Laboratory Experiments[J]. MATERIALS,2017,10(7).
APA	Cheng, Cheng,Li, Xiao,Li, Shouding,&Zheng, Bo.(2017).Failure Behavior of Granite Affected by Confinement and Water Pressure and Its Influence on the Seepage Behavior by Laboratory Experiments.MATERIALS,10(7).
MLA	Cheng, Cheng,et al."Failure Behavior of Granite Affected by Confinement and Water Pressure and Its Influence on the Seepage Behavior by Laboratory Experiments".MATERIALS 10.7(2017).