Decreasing of the air humidity by the ventilation control in the St. Barbara mine
The St. Barbara mine is a visitor mine having a large amount of timbering support which is deteriorating fast due to the high humidity conditions. The air conditioning system of mining is not suitable and also expensive for implementation in a shallow non-productive mine. As there are no usual air c...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
Mining and Metallurgy Institute, Bor
2022-01-01
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Series: | Mining and Metallurgy Engineering Bor |
Subjects: | |
Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/2334-8836/2022/2334-88362201001K.pdf |
Summary: | The St. Barbara mine is a visitor mine having a large amount of timbering support which is deteriorating fast due to the high humidity conditions. The air conditioning system of mining is not suitable and also expensive for implementation in a shallow non-productive mine. As there are no usual air contaminants in the visitor mines, ventilation could be powered only when a dew point of outside air is below the strata temperature. Applying this rule would certainly avoid condensation, but also raises a potential for partial dehumidification of mine walls as moisture can evaporate in these conditions. A microclimate analysis, based on one-year data, has showed that these favorable conditions of the outside air occur through the major part of the year. Their availability is mostly 100%, but during summertime there are periods when it drops down to 13%. A real time monitoring system with programable microcontroller allows the automatic ventilation control and adjustment to the psychrometric conditions. |
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ISSN: | 2334-8836 2406-1395 |