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| Content Provider | Springer Nature Link |
|---|---|
| Author | Tang, Zhi Cheng Huang, Run Qiu Liu, Quan Sheng Wong, Louis Ngai Yuen |
| Copyright Year | 2015 |
| Abstract | Rock joint surface roughness, which influences the shear resistance of joints, dictates the stability of rock blocks. However, there is a weakening effect on the shear behavior of a rock joint as it becomes “un-matching” caused by external factors, such as vibration due to nearby blasting, excavation or earthquake. This paper presents an experimental investigation of the shear behavior of artificial rock joints under different matching conditions by direct shear test, modeled by imposing varying magnitude of horizontal dislocation along the shear direction between the upper and lower rock blocks. The peak shear strength decreases with increasing dislocation. However, the effect of dislocation on peak shear strength becomes less pronounced as the normal stress increases. With increasing dislocation, the peak shear displacement increases; the shear stiffness decreases and gradually approaches a constant. The influence of dislocation on shear stiffness is more prominent under a higher applied normal stress. The results also show that the peak shear strength of matching joints is influenced mostly by shear velocity. |
| Starting Page | 761 |
| Ending Page | 769 |
| Page Count | 9 |
| File Format | |
| ISSN | 14359529 |
| Journal | Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur |
| Volume Number | 75 |
| Issue Number | 2 |
| e-ISSN | 14359537 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2015-08-02 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Artificial rock joint Roughness Contact state Dislocation Peak shear strength Peak shear displacement Shear stiffness Shear velocity Geotechnical Engineering & Applied Earth Sciences Geoengineering, Foundations, Hydraulics Geoecology/Natural Processes Nature Conservation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Geology Geotechnical Engineering and Engineering Geology |
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