PATTERNS OF DEVELOPMENT OF GEOMECHANICAL PROCESSES DURING HYBRID OPEN PIT/UNDERGROUND MINERAL MINING
Nurpeisova M.B. Salkynov A.T. Soltabayeva S.T. Miletenko N.A.
2024Ore and Metals Publishing house
Eurasian Mining
2024#41Issue 17 - 11 pp.
This article deals with the determination and analysis of patterns of geomechanical processes in hybrid open pit/underground mineral mining. The domestic and foreign practices of mineral mining gravitate increasingly more toward the hybrid open pit/underground technologies. An illustration of such operations in Kazakhstan is the Saryoba cop-per–gold ore deposit which needs individual engineering solutions and reliable geomechanical justification of production with regard to the standards of subsoil protection and industrial safety. Hybrid open pit/underground mining creates a complex geomechanical system featuring repeated loading of the same rock mass areas during open pit and underground mining operations implemented con-currently or sequentially. The problem of geomechanical assessment of rock mass in such conditions is com-plicated by many internal and external influences, and by variability of rock mass behavior in time and space. Aiming at safe and efficient mining of gold ore lodes at the test deposit, the authors analyze the influence of natural and geotechnical factors on deformation processes, which enables estimating control-lability of these effects on rock mass and its surroundings. This article describes the studies accomplished by the authors in the course of the research in the framework of the Project on Integrated Monitoring of Slow Crustal Motions in Central Kazakhstan. Further-more, the article contains the geomechanical monitoring results obtained by the authors using up-to-date survey and geodesy equipment which ensures high accuracy and efficiency of surveying. The novelty of the research consists in evolvement of a concept about deformation mechanism in bedded rock masses and fracturing of a pillar established between the open pit and underground mine, as well as in determination of displacement patterns in rocks mass subjected to the hybrid open pit/under-ground method of mineral mining, which enables selecting ways of control over geomechanical processes.
geomechanical processes , methods , mineral mining , monitoring , patterns , rocks
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Satbayev University, Almaty, Kazakhstan
NPK Algorithm LLP, Karaganda, Kazakhstan
Research Institute of Comprehensive Exploitation of Mineral Resources — IPKON, Moscow, Russian Federation
Satbayev University
NPK Algorithm LLP
Research Institute of Comprehensive Exploitation of Mineral Resources — IPKON
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