Influence of W-type and U-type ventilation methods on working face

To study the influence of U-type ventilation and W-type ventilation on working face and goaf, the monitoring data of gas, carbon monoxide, carbon dioxide, and other gas concentration and air volume in working face 9-204 and 9-211 of Dianping Coal Mine were systematically analyzed. The results show t...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-07, Vol.546 (4), p.42014
Main Authors: Guo, Linming, Yao, Jianwei, Xiashou, Su
Format: Article
Language:English
Subjects:
Air leakage
Carbon dioxide
Carbon dioxide concentration
Carbon monoxide
Coal mines
Combustion
Mine ventilation
Oxidation
Spontaneous combustion
Ventilation
Work face
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Summary:To study the influence of U-type ventilation and W-type ventilation on working face and goaf, the monitoring data of gas, carbon monoxide, carbon dioxide, and other gas concentration and air volume in working face 9-204 and 9-211 of Dianping Coal Mine were systematically analyzed. The results show that under the W-type ventilation mode, the air leakage of the working face is small, which will not cause gas accumulation at the upper corner and the end; there is no spontaneous combustion in the gob of these two working faces, so the advancing speed of these work face matches the spontaneous combustion period; the oxidation degree of the coal left in the gob with U-type ventilation is slightly higher than that with the W-type ventilation.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/546/4/042014