Abstract：In order to master the law of air leakage under the condition of multi-adjacent gob and gas extraction,according with the mining environment of multi-adjacent gob and gas extraction in Shaqu coal mine 15202work-face,the problem of air leakage was studied in gob. Though analyzing the influences of the adjacent gob and gas extraction to the air leakage of 15202 work-face,and measuring of the air leakage amount of the workface,the gas volume fraction was determined in gob and gas extraction system. The research results show:( 1)the working face gob air leakage is serious under the condition of multi-adjacent gob and gas extraction;( 2) in the amount of air leakage about 55. 7% leakage in the goaf,18. 5% leakage in the 14202 gob gas extraction system by the fissure of overlying strata,14. 7% leakage in the adjacent goaf,11. 1% leakage in the upper corner gas extraction system. The study provided the decision-making of preventing the coal spontaneous combustion in gob and guided significance to similar work-face of the air leakage recognition.

Keyword：air leakage;spontaneous combustion;gob;gas extraction;