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	An experiment of coupled seepage in a single fracture of rock
	Wang, EZ ; Long, T ; Li, A ; Chen, XH ; Yu, B ; Deng, XD
	2010-05-10 ; 2010-05-10
会议名称	Contribution of Rock Mechanics to the New Century, Vols 1 and 2 ; ISRM International Symposium/3rd Asian Rock Mechanics Symposium (ARMS) ; Kyoto, JAPAN ; Web of Science
关键词	single fracture coupled seepage hydraulic aperture exponential relationship curve Engineering, Geological
中文摘要	The paper introduces the experiment and analysis results of the relationship between seepage flow and the stress for a single fracture in the laboratory. The experiment was performed with self-designed devices under a series of normal stresses for five groups of the fracture samples and the experiment curves had been obtained for the relationships among the flux, stress, hydraulic gradients and fracture deformation. Some results can be concluded as following after lots of fitting and regression analysis of the experiment curves: (1) there exists exponential function relationship between hydraulic aperture of fracture and normal stress in the first loading, namely: b = b(0) e(-a Delta sigma). (2) The relationship between hydraulic aperture of fracture and normal stress shows the hyperbola function after multi-cycle loading, namely: b = b(inf) + c/(sigma(0) + Delta sigma). (3) for the smooth plate plane of fracture, the relationship between the hydraulic aperture and the normal stress shows the hyperbola function both in the first loading and after multi-cycle loading. (4) the rougher the fracture plane is, the further the relationship curve is to the hyperbola function, and the closer the relationship curve to the exponential function. (5) the parameters (a, b(inf), c) in the formula of coupled seepage relationship can be calculated by initial fracture aperture b(0), initial stress and modulus of elasticity of rock block. The above experimental results indicate deeper understanding of the mechanism of the coupled seepage of fracture, and they will supply some valuable conferences for the analysis of the interaction between seepage flow and stress of the fractured rock mass.
会议录出版者	MILLPRESS SCIENCE PUBLISHERS ; ROTTERDAM ; PO BOX 84118, 3009 CC ROTTERDAM, NETHERLANDS
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/20160]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, EZ,Long, T,Li, A,et al. An experiment of coupled seepage in a single fracture of rock[C]. 见:Contribution of Rock Mechanics to the New Century, Vols 1 and 2, ISRM International Symposium/3rd Asian Rock Mechanics Symposium (ARMS), Kyoto, JAPAN, Web of Science.

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