Geodynamic Safety of Mining Operations under Rockburst-Hazardous Conditions in the Khibiny Apatite Deposits

The results of investigations aimed at solving the topical problem of geodynamic risk assessment in mining of the Khibiny rockburst-hazardous deposits in the Kola Peninsula are presented. The developed procedures and approaches contribute to minimization of geodynamic risks under large-scale mining...

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Veröffentlicht in:Journal of mining science 2018-09, Vol.54 (5), p.734-743
Hauptverfasser: Kozyrev, A. A., Panin, V. I., Semenova, I. E., Zhuravleva, O. G.
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container_issue 5
container_start_page 734
container_title Journal of mining science
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creator Kozyrev, A. A.
Panin, V. I.
Semenova, I. E.
Zhuravleva, O. G.
description The results of investigations aimed at solving the topical problem of geodynamic risk assessment in mining of the Khibiny rockburst-hazardous deposits in the Kola Peninsula are presented. The developed procedures and approaches contribute to minimization of geodynamic risks under large-scale mining of close-spaced apatite-nepheline ore deposits. The geomechanical model is designed, which allows analyzing successive development of a system of closely spaced deposits in the Khibiny Massif. Based on the model data on the stress-strain state, the optimal sequence and direction of mining in the conditions of rockburst hazard is determined. The nested structure of the rock mass, direction of the tectonic compression, main radial faults, daylight surface relief and the parameters of the ore bodies are taken into account. The complexing of the predicted stress fields and seismicity improves reliability of detection of higher rockburst hazard zones. The examples of stoping sequence substantiation using a set of in-situ and numerical methods are given. The main lines of development in the geomechanical support of mining and the variants of process solutions toward regional and local unloading of rock mass are shown.
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The nested structure of the rock mass, direction of the tectonic compression, main radial faults, daylight surface relief and the parameters of the ore bodies are taken into account. The complexing of the predicted stress fields and seismicity improves reliability of detection of higher rockburst hazard zones. The examples of stoping sequence substantiation using a set of in-situ and numerical methods are given. 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Based on the model data on the stress-strain state, the optimal sequence and direction of mining in the conditions of rockburst hazard is determined. The nested structure of the rock mass, direction of the tectonic compression, main radial faults, daylight surface relief and the parameters of the ore bodies are taken into account. The complexing of the predicted stress fields and seismicity improves reliability of detection of higher rockburst hazard zones. The examples of stoping sequence substantiation using a set of in-situ and numerical methods are given. 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subjects Apatite
Compression
Deposits
Detection
Direction
Earth and Environmental Science
Earth Sciences
Forecasts and trends
Geological faults
Geomechanics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Halides
Massifs
Mathematical models
Mineral deposits
Mineral Resources
Mining
Mining accidents & safety
Mining industry
Nepheline
Numerical methods
Optimization
Ore deposits
Phosphate minerals
Procedures
Risk assessment
Rock masses
Rockbursts
Rocks
Safety and security measures
Seismicity
Sequencing
Stoping
Stress distribution
Tectonics
Unloading
title Geodynamic Safety of Mining Operations under Rockburst-Hazardous Conditions in the Khibiny Apatite Deposits
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