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Experimental Studies on Mechanical Properties of Rock Joints under Dynamic Loading

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Abstract:

In order to study the strength and deformation properties of rock joint under different shear velocities, normal stresses and undulation angles, series testes are conducted by a RMT-150C testing machines with artificial concrete rock joint samples in the present paper. Base on the experimental results, it can be found that the peak shear strengths decrease with the increment of shear velocity, and the decreasing rates tend to decrease with the increasing shear velocity. The shear strength of rock joints increase with the increasing undulation angles, and linearly increase with the increment of normal stress. It is also indicated that the shear stiffness increase with the increasing normal stress, undulation angle as well as the shear velocity with a decreasing tendency.

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Periodical:

Key Engineering Materials (Volumes 326-328)

Pages:

1709-1712

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.326-328.1709

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Online since:

December 2006

Authors:

Hai Bo Li, Hai Peng Feng, Bo Liu, Jun Ru Li

Keywords:

Dynamic Load, Rock Joints, Shear Stiffness, Shear Strength, Shear Velocity, Undulation Angle

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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