摘要
为探究陕西西韩兴隆煤矿有限公司采掘工作面突出预测敏感指标及临界值,首先现场考察初步确定3#煤层21301运顺掘进工作面钻屑量S值、钻屑瓦斯解吸指标K 1值作为突出危险预测指标,其临界值为4.6 kg/m、0.46 mL/(g·min1/2),钻孔瓦斯涌出初速度q值不宜作为突出危险预测敏感指标。然后实施工程扩大验证了其考察结果是合理可靠的。采用多种方法确定工作面突出敏感指标及临界值对该矿采掘工作面防治煤与瓦斯突出具有一定的借鉴意义。
In order to explore the sensitive indicators and critical values for predicting outburst in the mining face of Shanxi Xihanxinglong Coal Mine Co.,Ltd.,through the on-site investigation,the authors preliminarily determine the S value of drilling debris volume and the K 1 value of drilling debris gas desorption index for the 21301 Yunshun mining face of No.3 Coal Seam,whose critical values are 4.6 kg/m and 0.46 mL/(g·min1/2),and the initial velocity q value of drilling gas emission should not be used as a sensitive indicator for predicting outburst danger.Then,they carry out the engineering expansion to verify that the inspection results are reasonable and reliable,which has certain reference significance for the prevention and control of coal and gas outburst in the mining face of this mine.
作者
夏治华
汪国良
Xia Zhihua;Wang Guoliang(Jiangxi Lekuang Energy Co.,Ltd.,Jingdezhen,Jiangxi 333000)
出处
《江西煤炭科技》
2023年第3期136-139,共4页
Jiangxi Coal Science & Technology
关键词
回采工作面
掘进工作面
突出预测敏感指标
临界值
mining face
excavation face
outburst prediction sensitive index
critical value
