Improvement and application of gas drainage roadways in mountainous high outburst mines
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Abstract
Coal roadway rapid drilling in outburst mine is a difficult problem to solve all the time,now eliminating outburst is carried mostly by gas drainage roadways,so roadway manage is key.To solve the problem,Miluo coal mine as a research object,according to the terrain conditions of mountainous coal,on the original foundation of the project in coal mine design,aided transported adit and return air adit has designed,then tunnel gas drainage roadways,which was digged in opposite from main shafts and aided adits at the same time,gas was pulled out both in haulage roadway and return air roadway at the same time,then digged in opposite at the same time,it has been proven that it took 90 days to tunnel haulage roadway which is 901.1 m,121 days to tunnel return air roadway which is 927.8 m,shorten excavation time by 50% than planned,no coal and gas outburst accidents,safe high-speed driving was realized.
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