Deep Mining: A Rock Engineering Challenge

Increasing demand for metals caused by global economic growth and exploitation of shallow mineral deposits forces mineral extraction to go deeper. A direct consequence of this development is an increase in rock pressure-related mining problems. The role of rock engineering in the design and operatio...

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Published in:Rock mechanics and rock engineering 2019-05, Vol.52 (5), p.1417-1446
Main Author: Wagner, Horst
Format: Article
Language:English
Subjects:
Civil Engineering
Design criteria
Earth and Environmental Science
Earth Sciences
Economic development
Economic growth
Economics
Engineering
Engineering personnel
Exploitation
Geophysics/Geodesy
Global economy
Infrastructure
Mechanical properties
Mechanics
Metals
Mineral deposits
Mines
Mining
Mining engineering
Mining industry
Original Paper
Pressure
Robust design
Rock masses
Rock mechanics
Rock properties
Rocks
Stoping
Support systems
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container_title Rock mechanics and rock engineering
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description Increasing demand for metals caused by global economic growth and exploitation of shallow mineral deposits forces mineral extraction to go deeper. A direct consequence of this development is an increase in rock pressure-related mining problems. The role of rock engineering in the design and operation of deep mines is discussed in detail. Critical issues are the rock fracturing around mining excavations, the support and control of the fractured rock, and the rock mechanics design of mine infrastructure and extraction (stoping) systems. Progress of the science of rock mechanics in the areas related to these issues is highlighted and critically examined. Specific areas are the prediction and assessment of the mechanical properties of rock mass, the mechanics of controlling fractured rock around deep mining excavations and the resulting demands on support systems. Rock engineering aspects of stoping systems and the regional stress changes resulting from the extraction of large mineral bodies are discussed in detail. The progress in design concepts for open stopes and stopes with caving of the roof strata is illustrated. It is shown that the stress environment in deep mines does not favour the highly productive caving systems of stoping. The value of energy-based design concepts for very deep mines exploiting tabular mineral deposits is shown. Despite the considerable progress that has been made in the science of rock mechanics since the 1950s, progress in applying this knowledge to solve rock pressure problems in deep mines has been rather slow. The tools are available. What is needed is the development of robust design criteria for mine infrastructure, excavations and support systems for dynamic and changing stress environments. The second critical issue is the lack of highly qualified rock engineering personnel on the mines. This has been recognized by the European mining industry through supporting a continued education programme in rock engineering for deep mines.
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source Springer Nature
subjects Civil Engineering
Design criteria
Earth and Environmental Science
Earth Sciences
Economic development
Economic growth
Economics
Engineering
Engineering personnel
Exploitation
Geophysics/Geodesy
Global economy
Infrastructure
Mechanical properties
Mechanics
Metals
Mineral deposits
Mines
Mining
Mining engineering
Mining industry
Original Paper
Pressure
Robust design
Rock masses
Rock mechanics
Rock properties
Rocks
Stoping
Support systems
title Deep Mining: A Rock Engineering Challenge
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