Numerical Modeling of Stability of Fractured Reservoir Bank Slopes Subjected to Water–Rock Interactions
| Autor: | Qiang Yang, Feng Dai, Tiecheng Guo, Zeyu Ning, Zhihong Zhao, Zihao Dou |
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| Rok vydání: | 2017 |
| Předmět: |
Shear stiffness
0211 other engineering and technologies Numerical modeling Geology 02 engineering and technology 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Discrete element method Shear (geology) Fracture (geology) Geotechnical engineering Wetting Discrete element model 021101 geological & geomatics engineering 0105 earth and related environmental sciences Civil and Structural Engineering |
| Zdroj: | Rock Mechanics and Rock Engineering. 51:2517-2531 |
| ISSN: | 1434-453X 0723-2632 |
| Popis: | The effect of water on the shear behavior of joints in rocks is critical for determining the global stability of fractured rock slopes subjected to changes in water levels, because the joint peak shear strength can be significantly lowered owing to wetting. The roles of the mechanical and the combined physical and chemical water–rock interactions in the deformation of reservoir bank slopes are studied using discrete element method. The numerical results showed that the joints that are subparallel to the slope surface mainly determine the displacements of rock blocks and that water–rock interaction-induced deterioration of joint shear stiffness and strength plays a critical role in the stability of reservoir bank slopes. The weakening of rock fractures induced by interactions between water and fracture walls can explain the monitored valley contraction during the impoundment of high dams. |
| Databáze: | OpenAIRE |
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