Field Measurement of External Air Leakage Rate in Wugou Coal Mine
WANG Zhiliang
Abstract：The external air leakage rate of a mine is one of the important indexes for judging the operation state of the main fan and the ventilation management level of the mine. In this paper, a direct measuring method for the external air leakage which takes the diffuser outlet as the base point of air quantity adjustment was determined according to the current state of the ventilation system in Wugou Mine, a detailed field measuring scheme was worked out and field measurement was made. The results showed that the external air leakage rate of the mine was 8. 40% and 7. 85% respectively in the running state of No. 1 and 2 fans, the air leakage of the reserve fan is the main air leakage source, so corresponding control measures should be taken for it. The measuring results can provide scientific basis for removing the mine air leakage and optimizing the mine ventilation system.
Keywords：external air leakage ratemeasuring methodair leakage sourceventilation system
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 71-72,76 )