Current Science

Open Access Open Access  Restricted Access Subscription Access

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.
User
Notifications
Font Size

  • Dou, H., Han, T., Gong, X. and Zhang, J., Probabilistic slope stability analysis considering the variability of hydraulic conductivity under rainfall infiltration–redistribution conditions. Eng. Geol., 2014, 183, 1–13.

  • Calvello, M., D’Orsi, R. N., Piciullo, L., Paes, N., Magalhaes, M. and Lacerda, W. A., The Rio de Janeiro early warning system for rainfall-induced landslides: Analysis of performance for the years 2010–2013. Int. J. Disaster Risk Reduct., 2015, 12, 3–15.

  • Rosi, A., Peternel, T., Jemec-Auflič, M., Komac, M., Segoni, S. and Casagli, N., Rainfall thresholds for rainfall-induced landslides in Slovenia. Landslides, 2016, 13, 1571–1577.

  • Zhang, L. L., Zhang, J., Zhang, L. M. and Tang, W. H., Stability analysis of rainfall induced slope failure: A review. Proc. Inst. Civil Eng. Geotech. Eng., 2011, 164, 299–316.

  • Satyanaga, A., Rainfall-Induced Slope Failures and Preventive Measures in Singapore, Nanyang Technological University, Singapore, 2014.

  • Iverson, R. M., Landslide triggering by rain infiltration. Water Resour. Res., 2000, 36, 1897–1910.

  • Tsai, T. L. and Yang, J. C., Modeling of rainfall-triggered shallow landslide. Environ. Geol., 2006, 50, 525–534.

  • Caine, N., The rainfall intensity-duration control of shallow landslides and debris flows. Geogr. Ann. Ser. A, Phys. Geogr., 1980, 62, 23–27.

  • Guzzetti, F., Peruccacci, S., Rossi, M. and Stark, C. P., The rainfall intensity–duration control of shallow landslides and debris flows: an update. Landslides, 2008, 5, 3–17.

  • Fourie, A. B., Predicting rainfall-induced slope instability. Proc. ICE – Geotech. Eng., 1996, 119, 211–218.

  • Muntohar, A. S. and Liao, H. J., Rainfall infiltration: infinite slope model for landslides triggering by rainstorm. Nat. Hazards, 2010, 54, 967–984.

  • White, J. A. and Singham, D. I., Slope stability assessment using stochastic rainfall simulation. Proc. Comput. Sci., 2012, 9, 699–706.

  • Chen, R. H., Chen, H. P., Chen, K. S. and Zhung, H. B., Simulation of a slope failure induced by rainfall infiltration. Environ. Geol., 2009, 58, 943–952.

  • Raj, M. and Sengupta, A., Rain-triggered slope failure of the railway embankment at Malda, India. Acta Geotech., 2014, 9, 789–798.

  • Lee, M. L., Ng, K. Y., Huang, Y. F. and Li, W. C., Rainfallinduced landslides in Hulu Kelang area, Malaysia. Nat. Hazards, 2014, 70, 353–375.

  • Tan, X., Hu, N., Li, D., Shen, M. and Hou, X., Time-variant reliability analysis of unsaturated soil slopes under rainfall. Geotech. Geol. Eng., 2013, 31, 319–327.

  • Zhu, H., Zhang, L. M., Zhang, L. L. and Zhou, C. B., Twodimensional probabilistic infiltration analysis with a spatially varying permeability function. Comput. Geotech., 2013, 48, 249– 259.

  • Huang, F., Wang, G. S. and Tsai, Y., Rainfall reliability evaluation for stability of municipal solid waste landfills on slope. Math. Probl. Eng., 2013, 2013, 1848–1856.

  • Sinosteel Maanshan Institute of Mining Research, Geotechnical Investigation Report for the Yongping Hujiashan Slope, Maanshan, Anhui, 2007.

  • Fredlund, D. G. and Rahardjo, H., The role of unsaturated soil behaviour in geotechnical engineering practice. In 11th Southeast Asian Geotechnical Conference, 1993.

  • Vanapalli, S. K., Fredlund, D. G., Pufahl, D. E. and Clifton, A. W., Model for the prediction of shear strength with respect to soil suction. Can. Geotech. J., 1996, 33, 379–392.

  • Richards, L. A., Capillary conduction of liquids through porous mediums. Physics (College. Park. Md)., 1931, 1, 318–333.

  • van Genuchten, M. T., A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Am. J., 1980, 44, 892–898.

  • China Meteorological Administration, Rainfall level; http://www.cma.gov.cn/2011xzt/2013zhuant/20130620_3/2013062002/201308/t20130816_223400.html, 2013.

  • Zhu, Y., Reliability Analysis of Slope (in Chinese), Metallurgical Industry Press of China, Beijing, China, 1993.


Abstract Views: 234

PDF Views: 74




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

Abstract Views: 234  |  PDF Views: 74

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