Influence of the Inter-block Pillars Stability on the Mechanized Overhead Stopping Method
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Pavol Vavrek
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| Transactions of the VSB - Technical University of Ostrava, Civil Engineering Series |
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2008, Volume 8, Issue 2, Pages 305-314
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Doi: Not indexed
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The paper focus on the geomechanical analysis of underground mining by extraction of the deposit of magnesite minerals in Slovakia. The biggest deposit near Jelsava is called Dubrava massif and is formed by a complex of three magnesit pods (Dubrava, Mikova, Jedlovec) at a length of cc 4.5 km, with the right thickness of up to 600 m. The main extraction technique up the eigthies of the last century was the method of open stope with mining railles mechanization. For selective mining since the nineties was used a new method of extraction: mechanized overhead stopping method, with the inter-block pillars of 5x5 m. The article presents examination of proposal the inter-block pillars for the 220 m level with mathematical modelling and analytical technique.
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