Study on Roughness of Rock Fracture Surface

The topography of rock fracture surfaces created by Brazilian tests and direct shear tests is investigated as a fundamental study on the roughness of joint surface. The roughness is measured with the profilometer built up as a trial. The spectral analysis is done on the profiles of surfaces, and the...

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Bibliographic Details
Published inJournal of the Japan Society of Engineering Geology Vol. 32; no. 3; pp. 110 - 116
Main Authors SUGIMOTO, Fumio, FURUZUMI, Mitsumasa, ABE, Mamoru
Format Journal Article
LanguageEnglish
Published Japan Society of Engineering Geology 1991
Subjects
fractal dimension
root mean square roughness
spectral analysis
surface roughness
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Summary:The topography of rock fracture surfaces created by Brazilian tests and direct shear tests is investigated as a fundamental study on the roughness of joint surface. The roughness is measured with the profilometer built up as a trial. The spectral analysis is done on the profiles of surfaces, and then various roughness parameters of those profiles are estimated. The whole and the magnified portion of profile on rock fracture surfaces show a similar form. Also, the power spectral density increases linearly with wavelegth on the log-log graph. Therefore, it is found that the profile of fractured rock surface obeys fractal. Fractal dimension and various roughness parameters of fracture surface are different with rock type and fracture condition. Also, it is not shown that the correlations exist between fractal dimension and each roughness parameter.
ISSN:0286-7737
1884-0973
DOI:10.5110/jjseg.32.110