高抽巷抽采对煤自燃带影响的理论分析  

Theoretical analysis of the influence of gas extraction by high-level roadway on coal spontaneous combustion zone

作　　者：安朝峰 AN Zhaofeng(CCTEG Xi’an Research Institute Co. ,Ltd. ,Xi’an 710077,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077

出　　处：《陕西煤炭》2022年第1期41-44,共4页Shaanxi Coal

摘　　要：为研究高位巷道瓦斯抽采对煤自燃三带分布的影响,从理论方面分析高位巷道瓦斯抽采条件下,漏风通道的形成机理及其漏风动力来源,高位巷道与采动裂隙带相互贯通形成立体漏风通道,负压抽采及内生火风压联合作用产生漏风动力。推导出高位巷道负压值与采空区深度x处漏风比流量的关系式,分析表明高位巷抽采会增大进风侧自燃带的宽度,缩小回风侧自燃带的宽度。In order to study the influence of high-level roadway gas extraction on the distribution of three zones of coal spontaneous combustion,the formation mechanism of air leakage channel and its air leakage power source under the condition of high-level roadway gas extraction are analyzed theoretically.The research shows that the high-level roadway and mining fracture zone connect with each other to form a three-dimensional air leakage channel,and the air leakage power is generated by the combined action of negative pressure extraction and internal fire pressure.The relationship between the negative pressure value of high-level roadway and the specific air leakage flow at the depth x of goaf is deduced.The analysis shows that the high-level roadway gas extraction will increase the width of spontaneous combustion zone on the inlet side and reduce the width of spontaneous combustion zone on the return side.

关 键 词：高位巷 瓦斯抽采 自燃带 漏风动力 

分 类 号：TD712[矿业工程—矿井通风与安全] TD752.2