Gas Extraction and Prevention and Control Technology in Fully Mechanized Top-coal Caving Face of Jushan Coal Mine
Taking the 3305 working face in Zone 3 of Jushan Coal Mine as the research object,based on the analysis of the gas source,main influencing factors of gas emission,gas emission amount and mine gas extraction system,this paper proposes a drilling pre-extraction coal seam gas extraction technology and specific gas extraction method for the No.3 coal seam working face.The drilling layout and gas extraction amount of the working face are analyzed,and the gas extraction situation is evaluated.On this basis,safety technical measures for gas extraction are provided.
fully mechanized top-coal caving facegas extractionprevention and control technology
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