DBPapers
DOI: 10.5593/SGEM2016/B12/S03.058

GEOMECHANICAL SUBSTANTIATION OF SUBLEVEL-CHAMBER SYSTEM OF DEVELOPING WITH CONSOLIDATING STOWING

A.Neverov, A. Konurin, Y. Shaposhnik, S. Neverov, S.Shaposhnik
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-56-8 / ISSN 1314-2704, June 28 - July 6, 2016, Book1 Vol. 2, 443-450 pp

ABSTRACT
The researchers propose the evaluation of the stress-strain state and stability of the rock mass in the elements of sublevel-chamber extraction with consolidating stowing. It is applied the numeri-cal modeling in software system ANSYS 12 in the volumetric for-mulation of the problem. Mohr-Coulomb theory used as an assessment criterion for the strength of the rocks, and consolidating stowing. It is considered downstream and up-stream extraction of cameras to a depth of mining 950 m in relation to complex geome-chanical conditions of polymetallic deposit. It has been established the strength properties of consolidating stowing have a great impact at the safe-ty of mining operations. The conditions for the application of the sublevel-chamber system is de-termined for downstream and upstream extraction of cameras with consolidating stowing. It is shown the downstream extraction of cameras with the layer of stowing about 8 meters can be applicable in the case of special reinforcement of layer. It requires drilling of holes (distance is between 1-1.5 m in a height - 2.0 m in a length), installing a concrete anchors, and connecting it in a single steel bar, which covers the camera for its entire width.

Keywords: numerical modeling, stress-strain state, sublevel-chamber extraction, consolidating stowing, geo-mechanical conditions