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- Title
充填节理特性对岩石静态压缩力学行为 影响的颗粒流模拟.
- Authors
宋浪; 柴少波; 宋博阳; 柴连增; 杜宇翔
- Abstract
The characteristics of filled joints are important factors affecting the stability of rock engi‐ neering. To study the influence of the characteristics of filled joints on the statically compressive me‐ chanics and deforming features of rock, based on laboratory uniaxial tests of rock samples with filled joints, we performed particle flow simulations to study the evolutions of mechanical parameters, mi‐ cro-crack development, and the final failure morphology characteristics considering the variety of an‐ gles, numbers, and thicknesses of filled joints. The results show that the peak strength and elastic mod‐ ulus display a U-shaped variation with the increase of the angle of joints, monotonically decrease with the thickness of joints and the decreasing speed of elastic modulus gradually slows down. The crack ini‐ tiation stress and the total number of micro-cracks decrease first and then increase with the joint angle, and the total number of micro-cracks increases with the increase of joint thickness. The change of joint angle seriously affects the development of micro-cracks and the final failure mode of rock, i.e., when the joint angle is large, particularly with multiple joints, the overall stability of samples is poor, and samples are vulnerable to suffering sliding failure and cause serious damages.
- Subjects
FLOW simulations; GRANULAR flow; ELASTIC modulus; FAILURE mode &; effects analysis; ROCK testing
- Publication
Acta Scientiarum Naturalium Universitatis Sunyatseni / Zhongshan Daxue Xuebao, 2023, Vol 62, Issue 5, p145
- ISSN
2097-0137
- Publication type
Article
- DOI
10.13471/j.cnki.acta.snus.2023D007