考虑分形特征的节理面渗流计算模型

doi:10.13722/j.cnki.jrme.2014.s2.002

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Abstract Understanding hydro-mechanical behavior of single rock joints is a basic building block to assess several important properties of jointed rock mass associated with fluid flow，a representative one among which is mass transport in rock mass. The surface roughness plays an important role in the fluid flow behavior through a single rock joint，which has received extensive studies in the past a few decades，by using various approaches，such as JRC，statistical parameters and fractal dimension. An improved equation involving the relation between mechanical aperture and hydraulic aperture，with the employment of the fractal dimension of joint surface was proposed to evaluate the effects of surface roughness on the behavior of fluid flow through rock joints. To verify this equation，a number of coupled shear-flow tests for several artificial rock joint specimens with the surface characteristics of natural rock joints were carried out，and the evolution of mechanical and hydraulic apertures during shear processes were evaluated. The fractal dimension of each specimen was calculated using cubic covering method based on the measured surface topographical data. Compared with other commonly used equations，such as Zimmermans equation and Yeos correction equation，the proposed equation gives better fitting to experimental measurements，which may serve as an effective approach for quantitative estimation of the hydro-mechanical behavior of rock joints.

Key words： rock mechanics rough rock joint fractal dimension hydraulic aperture contact area

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	Articles by authors
	WANG Gang1
	2
	HUANG Na1
	JIANG Yujing1
	3
	LI Bo3
	WU Xuezhen1
	ZHANG Xuepeng1

Cite this article:

WANG Gang1,2,HUANG Na1, et al. SEEPAGE CALCULATION MODEL FOR ROUGH JOINT SURFACE CONSIDERING FRACTAL CHARACTERISTICS[J]. , 2014, 33(S2): 3397-3405.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.002 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/3397

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