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Xu, Weiya
- Slope Stability Analysis with Reference to Rainfall Infiltration in the Yongping Copper Mine, China
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PDF Views:71
Authors
Affiliations
1 Hohai University, Nanjing, 210098, CN
2 Nanjing Tech University, Nanjing, 210098, CN
3 State Key Laboratory of Safety and Health for Metal Mines, Sinosteel Maanshan Institute of Mining Research, Co, Ltd, Anhui, 243000, CN
1 Hohai University, Nanjing, 210098, CN
2 Nanjing Tech University, Nanjing, 210098, CN
3 State Key Laboratory of Safety and Health for Metal Mines, Sinosteel Maanshan Institute of Mining Research, Co, Ltd, Anhui, 243000, CN
Source
Current Science, Vol 116, No 4 (2019), Pagination: 536-543Abstract
Due to the influence of rainfall infiltration, the slope of Yongping Copper Mine appears to have a high probability of instability, posing a great threat to the mineral transportation roads and mining safety. In this study, the hydraulic response of the slope under rainfall conditions is simulated, the response of the slope under different rainfall conditions is discussed, and the safety factor (FS) and the probability of failure (Pf) of the slope during and after a rainfall are analysed. The results indicate that rainfall infiltration has a hysteretic effect on slope instability. The failure of the mining slope at the elevation between 178 m and 226 m is likely to occur in three days after a rainfall. The activity distribution of the slope indicates that it is an advancing landslide.Keywords
Failure Probability, Open-Pit Mine, Rainfall Infiltration, Safety Factor, Slope Stability.Full Text
References
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Abstract Views :169 |
PDF Views:92
Authors
Affiliations
1 School of Transportation and Civil Engineering, Nantong University, Nantong, China; Research Institute of Geotechnical Engineering, Hohai University, Nanjing, CN
2 School of Transportation and Civil Engineering, Nantong University, Nantong, CN
3 School of Civil Engineering, Central South University, Changsha, CN
4 Research Institute of Geotechnical Engineering, Hohai University, Nanjing, CN
1 School of Transportation and Civil Engineering, Nantong University, Nantong, China; Research Institute of Geotechnical Engineering, Hohai University, Nanjing, CN
2 School of Transportation and Civil Engineering, Nantong University, Nantong, CN
3 School of Civil Engineering, Central South University, Changsha, CN
4 Research Institute of Geotechnical Engineering, Hohai University, Nanjing, CN
Source
Current Science, Vol 121, No 6 (2021), Pagination: 801-809Abstract
Gravel soil is a complex porous medium, whose mechanical behaviour under triaxial loading can be well simulated using the discrete element method. However, numerical simulation of porous medium under compression requires not only the stress–strain behaviour, but also the variation of pore properties. In this study, models of gravel soil with different gravel contents (weight percentage of gravel in gravel soil) are generated by the single particle delivery method, and numerical triaxial tests are performed on these gravel soil samples. The equivalent porosity and equivalent pore size are introduced as evaluation indexes of pores to study the variation of pore properties in the numerical tests. The numerical results indicate that the porosity of gravel soil shows a V-shaped trend with the gravel content, and the gravel soil samples have minimum porosity in the yield stage.Keywords
Discrete element method, gravel soil, porosity, porous medium, triaxial loadingFull Text
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