孟津矿钻孔瓦斯抽放半径确定

摘要

合理确定钻孔瓦斯抽放半径参数，有利于矿井减少瓦斯抽放钻孔数量，降低成本，加快采掘速度，达到瓦斯抽放无盲区，消除采掘工作面的瓦斯突出危险性，确保矿井安全高效生产。%The paper introduces the determination of rational gas drainage radius of drilling holes ,which can re-duce the number of gas drainage drilling holes with low costs and high excavating speed ,eliminate the danger of gas outburst at working face without gas drainage blind zone and guarantee the safe and efficient production .