Abstract
The role of slope stability in design, implementation and prediction of risk is very significant. From an economic point of view, higher slope angles would result in reduction of stripping ratio, return time of investment, and increase of the minable mineral reserves. The presence of natural disasters such as earthquakes is very important for the sustainability of open and underground structures. Earthquake is one of the major factors affecting the instability of natural and artificial slopes. Often, instabilities occurred in slopes due to earthquake cause large amounts of material collapse into open pit mines, and thus halt the mine production. Sarcheshmeh Copper Mine is one of the most important and biggest active mines of Iran which has an important contribution to copper production in the world. Presence of many faults and extreme weathering accompanied by the fact that the mine is located in a seismically active zone, confirms the requirement of slope dynamic stability analysis in addition to static analysis. In this paper, the finite difference method is used for the stability analysis of rock mass under static and earthquake loadings. The static analysis is performed and modelling results are presented in terms of safety factor and displacement history of important locations of the wall. Slope dynamic stability analysis under seismic loads is implemented based on time response method. In order to apply earthquake loading, the 2003 Bam earthquake record is utilized. The conclusions obtained by the time response analysis are displayed in the form of vertical and horizontal displacements histories of criticed locations within the slope. The results of analysis confirm the overall stability of slope. The displacements obtained by the time response analysis method are convergent and within the permitted range, such that there is no oscillation after the earthquake load is applied over the time. Finally, a sensitivity analysis for some input parameters including wall slope angle, underground water table, cohesion and internal friction angle of the rock mass is performed to examine and assess the impact of these parameters on the wall displacements field.
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References
Azhari A, Ozbay U (2016) Evaluating the effect of earthquakes on open pit mine slopes. In: 50th US rock mechanics/geomechanics symposium
Glass CE (2000) The influence of seismic events on slope stability. Slope stability in surface mining. Society for Mining, Metallurgy and Exploration, Littleton, pp 97–105
Itasca Consulting Group Inc. (1995) FLAC2D, version 4.0: fast Lagrangian analysis of continua. User’s manual
Itasca Consulting Group Inc. (2008) UDEC version 4.01. Itasca Consulting Group Inc., Minneapolis
Keefer DK (1984) Landslides caused by earthquakes. Geol Soc Am Bull 95(4):406–421
Keefer DK (2002) Investigating landslides caused by earthquakes—a historical review. Surv Geophys 23(6):473–510
Kennedy BA, Niermeyer KE (1970) Slope monitoring systems used in the prediction of a major slope failure at the Chuquicamata Mine, Chile. In: Proceedings of symposium on planning open pit mines
Li AJ, Lyamin AV, Merifield RS (2009) Seismic rock slope stability charts based on limit analysis methods. Comput Geotech 36(1):135–148
Liu Y, Li H, Xiao K, Li J, Xia X, Liu B (2014) Seismic stability analysis of a layered rock slope. Comput Geotech 55:474–481
Lorig L (2016) Designing for extreme events in open pit slope stability. J S Afr Inst Min Metall 116(5):12–14
Mahboubi A, Aminpour M, Noorzad A (2008) Conventional and advanced numerical methods of rock slope stability analysis, a comparison study, Gotvand Dam Right Abutment (Iran) case study. In: IACMAG ‘2008, Goa, India, pp 203–211
Mortazavi A, Asadipour M, Eslami M, Salajegheh P (2015) Application of 3D numerical methods to the design of high rock slopes. Arab J Geosci 8:9577–9598
National Iranian Copper Industries Company (2017) Comprehensive report of Sarcheshmeh Copper Complex
Newmark NM (1965) Effects of earthquakes on dams and embankments. Geotechnique 15(2):139–160
Noorzad A, Aminpoor M, Salari H (2008) Seismic slope stability analysis of jointed rock masses on the northern abutment of Gotvand Dam, Iran. In: 14th world conference on earthquake engineering (14WCEE)
Read J, Stacey P (2009) Guidelines for open pit slope design. CSIRO Publishing, Clayton
Richards JP (2003) Tectono-magmatic precursors for porphyry Cu–(Mo–Au) deposit formation. Econ Geol 98(8):1515–1533
Rodrıguez CE, Bommer JJ, Chandler RJ (1999) Earthquake-induced landslides: 1980–1997. Soil Dyn Earthq Eng 18(5):325–346
Sepúlveda SA, Murphy W, Jibson RW, Petley DN (2005) Seismically induced rock slope failures resulting from topographic amplification of strong ground motions: the case of Pacoima Canyon, California. Eng Geol 80(3–4):336–348
Singh B, Goel RK (1999) Rock mass classification: a practical approach in civil engineering, vol 46. Elsevier, Amsterdam
Sjöberg J (1999) Analysis of large scale rock slopes. Doctoral dissertation, Luleå tekniska universitet
Zarei A, Moosavi M (2012) Slope stability analysis under dynamic loading at Choghart Iron Mine, Iran. In: 46th US rock mechanics/geomechanics symposium
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Arab Khaburi, M., Mortazavi, A. Slope Stability Analysis of Sarcheshmeh Copper Mine West Wall Under Seismic Loads. Geotech Geol Eng 37, 3141–3155 (2019). https://doi.org/10.1007/s10706-019-00830-3
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DOI: https://doi.org/10.1007/s10706-019-00830-3