Roughness characterization of fractures surfaces

[en] This paper presents a comparative study of various methods of roughness quantification applied to rock fractures. The parameters which are discussed and used for comparing 7 types of rock and two failure mode are : arithmetic mean value, quadratic mean value (and standard deviation of peaks heights), JRC and estimations of the fractal dimension by the ruler method, the analogy to Koch curve, the variogram and the power spectral density analysis. Regarding the results obtained and the discussion about the accuracy of calculation, it is difficult to draw a firm conclusion to state the most convenient method for quantifying roughness or complexity of rock fractures because all the parameters could be significant depending on the aims of the quantification. Nevertheless, the statistical analysis of results allows to point 4 independent parameters which have significant meaning and variability for quantifying roughness or complexity of natural rock fractures.

Disciplines :

Earth sciences & physical geography
Space science, astronomy & astrophysics

Author, co-author :

Legrain, Hughes

Tshibangu, Katshidikaya ; Université de Mons > Faculté Polytechnique > Génie Minier

Language :

English

Title :

Roughness characterization of fractures surfaces

Publication date :

09 May 2006

Event name :

International Symposium of the International Society for Rock Mechanics, Eurock 2006

Event place :

Liège, Belgium

Event date :

2006

Research unit :

F408 - Génie Minier

Available on ORBi UMONS :

since 12 October 2010

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