Study on the influence of rock bridge angle on the size effect of rock uniaxial compression.

[ 13 ] used a large rigid test device to study the UCS from the perspective of aspect ratio, and found that as the aspect ratio increased, the UCS showed a trend of first decreasing and then increasing.

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Based on the data analysis in Fig 8B , it is found that when the rock size is between 100 mm and 250 mm, the UCS fluctuation coefficient basically shows an increasing trend with the increase of the rock bridge angle.

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