注气增产对煤层突出危险性的方差分析  

Analysis of variance of coal outburst hazard caused by gas injection for stimulation

作　　者：李国柱 Li Guozhu(Yunnan Guoneng Coal and Electricity Co.,Ltd.,Honghe,Yunnan 652301,China)

机构地区：[1]云南国能煤电有限公司,云南省红河市652301

出　　处：《中国煤炭》2019年第4期110-113,共4页China Coal

摘　　要：为了探究注气开采煤层气后煤层突出危险性发生的变化,以煤的瓦斯放散初速度ΔP作为重要指标,开展了常压吸附下CO_2和CH_4的放散试验。得到在CO_2纯气体下,白龙山煤矿煤样瓦斯放散初速度ΔP为39.5 mmHg,是纯CH_4气体下ΔP(18.6 mmHg)的两倍多。单因素方差分析结果表明,检验统计量F值为7.18,处于显著影响数值范围内,进一步证实了不同CO_2浓度对煤层突出危险性的显著性。In order to explore the change of coal outburst risk after gas injection during gas extraction,the emission experiments of CO 2 and CH 4 under atmospheric pressure adsorption were conducted by taking the indicator Δ P ,the initial velocity of gas emission,as an important index. It is obtained that when the gas was pure CO 2,Δ P was 39.5 mmHg in Bailongshan Coal Mine,which was over twice as much as that (18.6 mmHg) when the gas was pure CH 4. The results of one-way analysis of variance showed that the F value of test statistic was 7.18,which was in the range of obvious significant value and further confirmed the significance of different concentrations of CO 2 on the coal seam outburst risk.

关 键 词：注气增产 煤层突出危险性 放散初速度 方差分析 CO2浓度 

分 类 号：TD712[矿业工程—矿井通风与安全]