CAJ | 학술논문

为了有效提高松软低透煤层瓦斯抽采效果，采用理论分析和现场试验的方法，研究了CO2爆破增透技术的增透效果。以韩城象山矿5号煤层为例进行了试验研究，试验结果表明： CO2爆破不仅能有效提高煤层透气性，而且高压CO2气体对煤层瓦斯具有一定的驱替置换作用。经CO2爆破后，其有效影响半径为8m，钻孔瓦斯抽采浓度提高了1．98～2．18倍，该技术能够有效提高松软低透煤层瓦斯抽采效果。
위료유효제고송연저투매층와사추채효과，채용이론분석화현장시험적방법，연구료CO2폭파증투기술적증투효과。이한성상산광5호매층위례진행료시험연구，시험결과표명： CO2폭파불부능유효제고매층투기성，이차고압CO2기체대매층와사구유일정적구체치환작용。경CO2폭파후，기유효영향반경위8m，찬공와사추채농도제고료1．98～2．18배，해기술능구유효제고송연저투매층와사추채효과。
In order to improve methane drainage effect of soft and low-permeability coalseam , applying theoretical analysis and field test method to researching permeability-increasing effect of CO 2 blasting.Taking 5th coalseam in Xiangshan Colliery as an example , field test showed that CO 2 blasting could not only effectively increase permeability , but also CO2 could drive methane in some de-gree.After CO2 blasting, its effective influence radius was 8m, bore-hole methane drainage concentration improved 1.98-2.18 times, which showed that this technology could effectively improve methane drainage effect of soft and low -permeability coalseam.