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Mine Ventilation in the 21st Century – Development Towards Adaptive Ventilation Systems

Mine ventilation and climatization became increasingly important over the last decade. Main challenges and drivers have been the development of mining activities towards greater depths, more complex deposits with a larger areal extent, the further introduction and implementation of diesel-powered vehicles as well as stricter occupational exposure limits and rising energy costs. To meet these requirements and to keep the ...

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Ventilation on Demand

As mining activities advanced throughout the centuries, mines increased in depth and complexity, resulting in the development of new technologies and processes. Ventilation was not only affected in terms of increased air quantities to be supplied, but controlling the airflow also gained attention. Until today, these trends are ongoing, meaning mines are still increasing in complexity, depth and machinery used, ...

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Innovative Monitoring Measures in the Phase of Post-Mining

Mining activities often influence huge areas which can only be observed efficiently with remote sensing methods. Recently the European Programme of Earth Observation Copernicus began to offer the opportunity to pursue this monitoring with innovative attempts in the production phase as well as in the post-mining phase. The combination of spatial data gained from satellite-supported sensors allows a precise verification ...

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Development of an Underground Positioning System Based on the Ultra-Wideband Radio Technology

For the automation of underground mobile equipment in the scope of the Mining 4.0 initiative, it is necessary to have precise and continuous position information of that very mobile equipment. Different indoor positioning systems are available these days. However, not every system is suitable for use in underground mining operations. At the Institute for Mineral Resources Machine Technology (IMR) of ...

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Latest Developments in LIBS for Distinction of Coal and Waste Rock in Explosive Areas

The Institute for Mineral Resources Machine Technology (IMR) at the RWTH Aachen University, Aachen/Germany has been working on options to enable boundary layer detection as well as horizon control for underground coal operations for more than a decade. One of these tested options is laser-induced breakdown spectroscopy (LIBS). After a short introduction into the technology of LIBS, this article describes ...

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Elements and Aspects of the Post-Mining Era

The subsidised German coal industry will cease to exist on 31.12.2018. The post-mining era will then set in, not just in the coalfields of North Rhine-Westphalia and Saarland, but in many other German mining regions too, where it has already been a reality for some time. The elements and aspects of the post-mining age will mean a permanent weighing-up of ...

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Using a Hierarchical Approach for the Dilution of Gases

In order to ensure safe underground working conditions, especially in case of gas outbursts, it is essential to develop ventilation concepts for the necessary dilution of harmful gases with respect to the occurring gases, gas concentrations and general operational conditions as to cross-sectional areas and existing ventilation systems. Therefore, a concept for a hierarchical approach for the dilution of gases ...

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About Possibilities to Improve Current Outburst Hazard Prediction Based on Updated Mechanism of Coal and Gas Outburst

In this paper the problem of coal and gas outburst – the coal pit’s most complex and dangerous induced geodynamic phenomenon – occurrence and development has been considered in details. Based on the theoretical and experimental researches it has been shown that this phenomenon may occur in full strength only with sufficient quantity of total potential energy available in the massif’s ...

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Redefining Deposit’s Reserves by Advanced Mineral Processing Approaches

The estimation of a deposit’s reserves depends on the geological and mineralogical characteristics as well as the market value of the product. It is also influenced by the mining and mineral processing technology applied and the respective costs generated. Ongoing challenges such as decreasing prices, lower grade ores, rising labour and equipment costs call for new approaches. This paper highlights ...

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Predicting Acid Mine Drainage: Past, Present, Future

Total worldwide liability associated current and future remediation of acid mine drainage (AMD) is approximately 100,000 million US-$. Consequences of failing to predict AMD for individual operations and for the mining industry include unplanned spending on remedial measures and reputational damage. Despite these severe risks, predicting AMD properties of mine wastes is typically not an attribute that is strongly embedded ...

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