Open AccessQuantitative description of the joint surface roughness considering the influence of shear direction
Author(s) -
Yu Song,
B Liu,
Darui Ren,
Yu Meili
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/570/3/032015
Subject(s) - joint (building) , surface finish , root mean square , joint probability distribution , shear (geology) , standard deviation , surface roughness , geometry , magnetic dip , geology , statistical parameter , direct shear test , materials science , optics , mathematics , composite material , physics , structural engineering , statistics , engineering , quantum mechanics , geophysics
The joint surface roughness in consideration of the influence of shear direction is quantitatively described. A natural joint produced by Brazilian splitting test is scanned, a digital elevation model that represents the morphological features of the joint is established. The two-dimensional roughness of joint profiles along the shear direction is analysed according to the parameters of root mean square (Z2), joint roughness coefficient (JRC) and the statistical characteristics of dip angles, respectively. It is proved that the standard deviation of dip angles is linearly correlated with the value of JRC 2D . Further, the probability distribution of apparent dip angles along the shear direction is introduced to describe the shear-related three-dimensional joint roughness. Based on the scanning images of the joint morphology, the probability distribution of apparent dip angle varies with different shear directions.