Study on Failure Mechanism of Soil–Rock Slope with FDM-DEM Method
Abstract
:1. Introduction
2. FDM-DEM Coupled Simulation Method
2.1. FDM-DEM Coupled Theory
2.1.1. Theory of Mapping Control Particle Force to Segment Node
2.1.2. Theory of Mapping Segment Velocity to Control Particles
2.2. Realization of PFC/FLAC Coupled Method
3. Generation of Irregular Stone Blocks
3.1. Development of Irregular Stone Blocks
3.2. Construction Process of Random Mesostructure
4. Numerical Simulation
4.1. Calibration of Micro- and Macro-Parameters
4.2. Establishment of FDM-DEM SRM Slop Model
5. Results and Discussion
5.1. Validation of the Model
5.2. Failure Process of Slope
5.3. Evolution of Meso-Contact between Stone Particles
5.4. Macro and Meso Deformation and Failure Mechanism of SRM Slope
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Density (kg/m3) | Bulk Modulus (GPa) | Shear Modulus (GPa) | Frictional Angle (°) | Cohesion (kPa) | Tensile Strength (kPa) |
---|---|---|---|---|---|
2700 | 0.5 | 0.15 | 30.0 | 50.0 | 0.1 |
Material | Density (kg/m3) | Stiffness (N/m) | Cohesion (N) | Friction Coefficient | ||
---|---|---|---|---|---|---|
Soil | 2000 | 5.0 × 107 | 2.0 × 107 | 1.5 × 103 | 3.5 × 103 | 0.55 |
Stone | 2700 | 5.0 × 108 | 5.0 × 108 | 1.0 × 106 | 1.0 × 106 | 1.0 |
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Zheng, Y.; Zheng, L.; Zhan, H.; Huang, Q.; Jia, C.; Li, Z. Study on Failure Mechanism of Soil–Rock Slope with FDM-DEM Method. Sustainability 2022, 14, 17015. https://doi.org/10.3390/su142417015
Zheng Y, Zheng L, Zhan H, Huang Q, Jia C, Li Z. Study on Failure Mechanism of Soil–Rock Slope with FDM-DEM Method. Sustainability. 2022; 14(24):17015. https://doi.org/10.3390/su142417015
Chicago/Turabian StyleZheng, Yanni, Lifeng Zheng, Huyue Zhan, Qingfu Huang, Chaojun Jia, and Zhong Li. 2022. "Study on Failure Mechanism of Soil–Rock Slope with FDM-DEM Method" Sustainability 14, no. 24: 17015. https://doi.org/10.3390/su142417015