DBPapers
DOI: 10.5593/SGEM2015/B13/S3.015

ASSESSMENT RESULTS ON GEOMECHANICAL STATE OF NEAR-WALL ROCK MASS IN OPEN-PITS OF THE KOLA REGION BY INTEGRATED INSTRUMENTAL METHODS

A. Kozyrev, V. Rybin, K. Konstantinov
Friday 7 August 2015 by Libadmin2015

References: 15th International Multidisciplinary Scientific GeoConference SGEM 2015, www.sgem.org, SGEM2015 Conference Proceedings, ISBN 978-619-7105-33-9 / ISSN 1314-2704, June 18-24, 2015, Book1 Vol. 3, 111-118 pp

ABSTRACT
The open-pit slope stability and the stability of separate benches depend on the state of stress, properties and structural disturbance of the intact rock mass, as well as on a secondary anthropogenic rock disturbance due to the effective static and dynamic stress fields in open-pit mining and ore breaking. It is these parameters that are first taken into account in justification of critical angles of benches and pit slopes in rock masses. The state of stress of a rock mass is determined by a “doorstopper” stress-relief technique in the Zhelezny open-pit benches, the Kovdorsky iron-ore deposit, as well as in the Tsentralny and Njorkpakhksky apatite-nepheline deposits, the Khibiny massif, outside the disturbed zone.

Keywords: open-pit wall, stress-strain state, geophysical methods, mining safety.