【摘要】 为确保赵庄矿冲孔钻孔合理布置,解决瓦斯抽采空白带问题,通过COMSOL数值模拟软件对不同出煤量钻孔的有效抽采半径进行模拟,并对现场冲孔钻孔影响半径进行考察试验。结果表明:出煤量的增加可有效提高钻孔有效抽采半径,不同出煤量钻孔瓦斯抽采效果的差异性随着抽采时间的延长显著增强。更多还原

【Abstract】 In order to ensure the reasonable layout of punching holes in zhaozhuang mine and solve the problem of blank gas extraction belt,COMSOL numerical simulation software was used to simulate the effective extraction radius of boreholes with different coal output,and the influence radius of on-site punching holes was investigated and tested. The results show that the effective extraction radius of borehole can be effectively increased with the increase of coal output,and the difference of gas extraction effect of borehole with different coal output increases significantly with the extension of extraction time.更多还原