School of Mine Safety , North China Institute of Science and Technology
No.9 Coal mine of Henan Hebi Coal Power Co.Ltd

为提高鹤煤九矿二1煤层掘进工作面突出预测的准确率,通过现场实验,理论分析相结合的方法得到九矿二1煤层掘进工作面突出预测指标钻孔瓦斯涌出初速度(q)、钻屑瓦斯解吸指标(Δh2、K1)、钻屑量(S)的敏感性排序为M(q)>M(Δh2)>M(K1)>M(S)。通过量纲分析法分析钻孔瓦斯涌出初速度指标的适用性,研究结果表明钻孔瓦斯涌出初速度对于九矿二1煤层的突出预测适用性最优,反映出的煤体应力、煤体强度、瓦斯赋存情况最为全面,并通过理论计算确定钻孔瓦斯涌出初速(q)指标的临界值为4.5L·min-1。

In order to improve the accuracy of outburst prediction in the No.21coal seam excavation workingface of the No.9 Coal Mine,acombination of on-site experiments and theoretical analysis was used to obtainthe sensitivity ranking of the outburst prediction indicators of the No.21 coal seam excavation working face ofthe No.9 Coal Mine, such as the initial velocity of drilling gas emission (q), the desorption indicators ofdrilling cuttings gas (Δh2、K1), and the amount of drilling cuttings (S), as M(q)>M(Δh2)>M(K1)>M(S).The dimensional analysis method is used to analyze the applicability of the initial velocity index of gas emissionfrom boreholes.The research results show that the initial velocity of gas emission from boreholes is the best forthe outburst prediction of No.9 Coal Mine No.21 Coal Seam, which reflects the most comprehensive coal32stress, coal strength, and gas occurrence.The critical value of the initial velocity (q) index of gas emissionfrom boreholes is determined to be 4.5 L·min-1 through theoretical calculation.

国家自然科学基金资助项目(52174181)

甄康哲,王海东,方正,等 .鹤煤九矿二1 煤层突出预测敏感指标适用性分析[J].华北科技学院学报,2023,20(6):23-29

ZHEN Kangzhe,WANG Haidong,FANG Zheng,et al.Applicability analysis of sensitive indexes for outburstprediction of No.2 coal seam in Hemei No.9 coal mine [J].Journal of North China Institute of Science andTechnology,2023,20(6):23-29