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Slope Stability Analysis with Reference to Rainfall Infiltration in the Yongping Copper Mine, China


Affiliations
1 Hohai University, Nanjing, 210098, China
2 Nanjing Tech University, Nanjing, 210098, China
3 State Key Laboratory of Safety and Health for Metal Mines, Sinosteel Maanshan Institute of Mining Research, Co, Ltd, Anhui, 243000, China
 

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.
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  • Slope Stability Analysis with Reference to Rainfall Infiltration in the Yongping Copper Mine, China

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Authors

Yue Li
Hohai University, Nanjing, 210098, China
Weiya Xu
Hohai University, Nanjing, 210098, China
Shengnian Wang
Nanjing Tech University, Nanjing, 210098, China
Huanling Wang
Hohai University, Nanjing, 210098, China
Yongxin Dai
State Key Laboratory of Safety and Health for Metal Mines, Sinosteel Maanshan Institute of Mining Research, Co, Ltd, Anhui, 243000, China

Abstract


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.

References





DOI: https://doi.org/10.18520/cs%2Fv116%2Fi4%2F536-543