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Primena 3D analize stabilnosti kosina pri definisanju uslova iskopa uglja u površinskim kopovima
Application of 3D slope stability analysis in defining the excavation conditions of coal at the open pits
aUniverzitet u Beogradu, Rudarsko-geološki fakultet bRudnik uglja Pljevlja, Pljevlja, Republika Crna Gora
e-adresa: ghnikovic@rgf.bg.ac.rs
Projekat: Geotehnički aspekti istraživanja i razvoja savremenih tehnologija građenja i sanacija deponija komunalnog otpada (MPNTR - 36014)
Sažetak
Trodimenzionalna analiza stabilnosti kosina (3D) ima brojne prednosti nad dvodimenzionalnom (2D), pre svega zbog realnijeg prikaza geometrije kosine i klizne površine, ali i uvažavanja sila bočnog otpora na obodnim stranama kosine. Na osnovu brojnih 2D analiza metodom Morgenstern-Prajs određene su kritične klizne površine, a zatim su za njih određeni 3D faktori sigurnosti uvažavanjem bočnog otpora na stranama kosina iskopa. Na osnovu rezultata 3D analiza stabilnosti predloženo je izvođenje iskopa po zonama i za svaku zonu definisane su širine kampadnog iskopa i bezbedna rastojanja iskopa od čeonog dela kosine. Veličine faktora sigurnosti, dobijene iz uporednih 2D i 3D analiza stabilnosti, nedvosmisleno pokazuju da ukoliko se u toku iskopa ostvare 3D uslovi, što je slučaj kod kampadnog iskopa, onda se mogu da iskopaju daleko veće količine uglja nego kada se iskop vrši u 2D uslovima stabilnosti.
Abstract
Three-dimensional slope stability analysis has many advantages over the two-dimensional (2D), primarily due to more realistic view of slope geometry and slip surface, and involving side force resistance in the slope. Because of that in the paper, based on numerous 2D stability analyses applying the Morgenstern-Price method, critical slip surfaces were determined and 3D safety factors for them, involving the lateral resistance on the sides of linear lamellas excavation, were defined. Based on 3D stability analyses the zone excavation was proposed and width of slice excavation and safe distance from the front part of the slope were defined for each zone. The size of safety factor, obtained from comparative 2D and 3D stability analysis, clearly show that if 3D conditions were realized during excavation, as is the case with linear lamellas excavation, then much greater quantity of coal can be mined than when excavation is done in 2D stability conditions.
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Reference
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*** (2012) Study of the stability analyzes and geotechnical conditions for excavation of coal for the open pit Potrlica - NW part Cementara - Zone Slapište. Belgrade: Faculty of Mining and Geology, in Serbian, February
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1
|
Albataineh, N. (2006) Slope stability analysis using 2d and 3d methods. Master of Science, University of Akron, Civil Engineering, www.etd.ohiolink.edu
|
|
 
|
Ćorić, S. (2006) Geostatic calculations, University in Belgrade. Faculty of Mining and Geology and Journal Construction, Belgrade, 460(in Serbian)
|
|
1 
|
Ćorić, S., Čaki, L., Rakić, D., Jotić, S., Ubiparip, B., Ljubojev, M. (2011) Trodimenzionalni aspekti analize stabilnosti kosina. Rudarski radovi, Bor, br. 3, str. 41-60
|
|
1
|
Duncan, J.M., Wright, S.G. (2005) Soil strength and slope stability. Hoboken, NJ: John Wiley & Sons, str. 297
|
|
|
Duncan, J.M. (1996) State of the Art: Limit Equilibrium and Finite-Element Analysis of Slopes. Journal of Geotechnical Engineering, 122(7): 577-596
|
|
|
Fredlund, D.G., Krahn, J. (1977) Comparison of slope stability methods of analysis. Canadian Geotechnical Journal, 14(3): 429-439
|
|
|
Gitirana, G., ***, Santos, M.A., Fredlund, M.D. (2008) Three-Dimensional Analysis of the Lodalen Landslide. u: GeoCongress 2008
|
|
|
Hadži-Niković, G. (2005) Constitutive relations of unsaturated soils Belgrade terrain. Belgrade: Faculty of Mining and Geology, Unpublished PhD dissertation, 247 p
|
|
|
Lam, L., Fredlund, D.G. (1993) A general limit equilibrium model for three-dimensional slope stability analysis. Canadian Geotechnical Journal, 30(6): 905-919
|
|
|
Leshchinsky, D., Baker, R. (1986) Three-dimensional slope stability : End effects. Soils and Foundations, 26(4): 98-110
|
|
|
Ljubojev, M., Ignjatović, D., Ljubojev, V., Đurđevac-Ignjatović, L., Rakić, D. (2010) Deformation and bearing capacity of buried material near the shaft opening at the open pit mine 'Zagradje', open pit 2. Rudarski radovi, Bor, br. 2, str. 107-122
|
|
|
Michalowski, R.L. (1989) Three-dimensional analysis of locally loaded slopes. Géotechnique, 39(1): 27-38
|
|
|
Price, V. E., Morgenstern, N. R. (1965) The Analysis of the Stability of General Slip Surfaces. Géotechnique, 15(1): 79-93
|
|
5
|
Rakić, D., Čaki, L., Ćorić, S., Ljubojev, M. (2011) Rezidualni parametari čvrstoće smicanja visokoplastičnih glina i alevrita PK 'Tamnava-Zapadno polje'. Rudarski radovi, Bor, br. 1, str. 29-48
|
|
|
Stark, T.D., Eid, H.T. (1998) Performance of Three-Dimensional Slope Stability Methods in Practice. Journal of Geotechnical and Geoenvironmental Engineering, 124(11): 1049-1060
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