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GEOMECHANICAL SUBSTANTIATION OF DEEP MINING IN COMPLICATED MINING-GEOLOGICAL AND GEODYNAMIC CONDITIONS
Abstract
The paper presents the solution of the actual problem - the geomechanical substantiation of rockburst hazardous deposits mining in the conditions of the mountainous topography at a depth of up to 1000 m from the surface. Four fundamentally possible variants of mining at level +10 m of the Kirovsky mine owned by the Apatit joint-stock company, which develops the Kukisvumchorr and Yukspor apatite-nepheline deposits, are considered. A three-dimensional geomechanical model which includes a long section of the Khibiny massif has been developed. The SigmaGT software was used, which implements the finite-element method in a volumetric formulation and allows modeling stress and strain fields taking into account the main geological and mining-engineering factors. The compressive stress concentration and stress relief areas in rock mass at different stages of mining, as well as estimated areas of increased geodynamic hazard have been identified. The hazard level is shown when approaching the stoping front with a thick fault structure (the Saamsky fault). The safe mining principles at deposits developed at great depths in tectonically stressed rock masses are formulated.
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References9
Turchaninov I.A., Markov G.A., Ivanov V.I. et al. Tectonic stresses in the earth’s crust and stability of mine excavations, Russia, 1978, 256 p;
Kozyrev A.A., Semenova I.E., Avetisian I.M. Geomechanical justification for extracting reserves at the deep mines of the Kukisvumchorr deposit, Mining Informational-Analytical bulletin (scientific journal), Russia, vol. 4, pp. 143-155, 2017;
Tryapitsyn V.M., Shabarov A.N. Modern tectonics and geodynamics of the Khibiny, Russia, 2007, 146 p;
Singh G.S.P., Singh U.K. A numerical modeling approach for assessment of progressive caving of strata and performance of hydraulic powered support in longwall workings, Computers and Geotechnics, Vol. 36, Issue 7, September 2009, pp 1142–1156;
Hidalgo K.P., Nordlund E. Failure process analysis of spalling failure – Comparison of laboratory test and numerical modelling data, Tunnelling and Underground Space Technology, Vol. 32, November 2012, pp 66-77;
Pan P., Feng X. Numerical study on coupled thermo-mechanical processes in Äspö Pillar Stability Experiment, Journal of Rock Mechanics and Geotechnical Engineering, Vol. 5, Issue 2, April 2013, pp 136–144;
Stead D., Coggan J.S., Elmo D., Yan M. Modelling Brittle Fracture in Rock Slopes – Experience Gained and Lessons Learned, Slope Stability, 2007, pp 239- 252;
Federal norms and rules in the field of industrial safety "Safety rules for mining and processing solid minerals", Order of Rostechnadzor of December 11, Russia, 2013, № 599;
Guidelines for the safe management of mining operations in deposits prone and dangerous for rockbursts (Khibiny apatite-nepheline deposits), Mining Institute of the Kola Science Centre of the Russian Academy of Sciences, JSC Apatit. Russia, 2016, 112 p.
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