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Vol. 18 (2015 year), No. 2

Savchenko S. N.
Distribution of horizontal tectonic stresses in the Kovdor ore region

The boundary-element method in 2D setting of task of elasticity theory has been used for research of stress state of rock mass in the Kovdor intrusion taking into consideration its hierarchically-block geological structure. Particularities of stresses distribution have been revealed in the region of apatite-magnetite deposit development by the "Zhelezny" mine, "Kovdorsky GOK" JSC. Zones of maximum tension deformations have been determined in the vicinity of the open-pit under the given boundary conditions and mechanical properties of rocks

(in Russian, стр.7, fig. 6, tables. 2, ref 8, Adobe PDF, Adobe PDF 0 Kb)

Vol. 19 (2016 year), No. 1, DOI: 10.21443/1560-9278-2016-1/1

Savchenko S. N.
Energy evolution model in natural-engineering systems

Interrelation of two leading parameters of a dynamic system in evolution has been considered. The homogeneous system of first-order differential equations with two unknown functions has been solved for some special cases of time-varying equation coefficients. Physical interpretation of the examples considered has been presented. It has been determined that a character of change for the leading parameters of the dynamic system depends on the type of functions-coefficients composing the differential equation system

(in Russian, стр.0, fig. 0, tables. 0, ref 0, Adobe PDF, Adobe PDF 0 Kb)

Vol. 20 (2017 year), No. 1, DOI: 10.21443/1560-9278-2017-20-1/1

Rybin V. V., Savchenko S. N.
Reconstruction of orientation of stresses acting in infinity within the Kovdor ore body based on field determinations

Mining Institute KSC RAS has conducted research which aim is to study the possibilities of increasing the tilt angles of pit walls in massifs of solid rock. One of the problems the solution of which will contribute to achieving this goal is to determine the direction of the maximum component of principal stresses in intact massif on the "infinity" necessary to work out mathematical models of rock massif including quarry recess. To solve this problem it has been proposed to use the results of parameters' measurement of stress state by the unloading method in near-wall rock massif. The basic research of near-wall rock massif has been conducted on mine quarry "Zhelezny" (JSC "Kovdor ore processing plant"). The measurements have been performed by the discharge method in option of end measurements directly from the quarry ledges on special observation stations using horizontal wells. The direction of maximum compression acting in sub-meridional course in the Kovdor apatiteshtafelyte- baddeleite deposit (the Kovdor ore cluster) has been determined by the conformal mapping method on the basis of experimental estimations of stress parameters in the rock massif. The results obtained are of great importance for assessing a level of stresses acting directly in a near open-pit zone. They are applied to set boundary conditions when modeling stress-strain state of near-wall rock massif and assess slope stability.

(in Russian, стр.7, fig. 5, tables. 1, ref 8, Adobe PDF, Adobe PDF 0 Kb)