Authors: V.I. Golik, Y.I. Razorenov, O.Z. Gabaraev

Title of the article: Management of rock mass geomechanics in under-ground ore mining

Year: 2017, Issue: 3, Pages: 55-64

Branch of knowledge: Earth sciences

Index UDK: 622.81:622.271:622.235

DOI: -

Abstract: In underground mining of powerful metal fields, performance indicators decrease due to insufficient accounting of geomechanical features of ore-bearing strata that is followed by development of deformations up to the critical size with destruction of terrestrial surface and decrease in indicators of completeness of subsoil use. It is contributed by the existing concept of evaluation of development efficiency by ore production costs without estimation of mineral losses and damage to surrounding environment. The experimental approach to solving the problem is distinguished by combining the methods of proving the technical feasibility and efficiency of optimizing development technology based on geomechanical factors. The main idea of management decisions is to transfer geomaterials in the mode of volumetric compression using the phenomenon of creating the bearing structures from the jammed structural rock blocks. Research is performed by the complex method including the analysis of concepts, natural researches and modeling on photoelastic materials in the conditions of North Caucasian fields. Results of industrial experiment allow us to create the field database and to optimize the deposit mining indicators using the opportunities of ore-bearing rock masses to create the bearing designs keeping geomechanical balance of the system with lower economic costs and to avoid losses and ore dilution at the stage of ore extraction. The proposed model differs in the use of correction coefficient of natural and technogenic stresses with adaptation to local conditions. Establishment of dependence between natural and technological factors allows us to specify the standards of ore deposits opened, prepared and ready for extraction on the basis of calculation methods. The possibility to minimize critical stresses and deformations corresponding to them is provided for by separation of the ore field into sites which are safe from geomechanical positions using less costly methods of ensuring rock mass stability.

Key words: Field geomechanics rock mass deformation efficiency development rock block

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