突出煤层瓦斯抽采影响下采空区自燃“三带”观测  

Observation of“Three Zones”of Spontaneous Combustion in Goaf Under the Influence of Gas Drainage in Outburst Coal Seam

作　　者：李鑫[1] 柳东明 唐辉 王博 LI Xin;LIU Dongming;TANG Hui;WANG Bo(Daxing Coal Mine,Tiefa Coal Industry Group Co.,Ltd.,Diaobingshan 112700,China;China Coal Technology and Engineering Group Shenyang Research Institute,Fushan 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China)

机构地区：[1]铁法煤业(集团)有限责任公司大兴煤矿,辽宁调兵山112700 [2]煤科集团沈阳研究院有限公司,辽宁抚顺113122 [3]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《煤矿安全》2020年第12期228-231,共4页Safety in Coal Mines

基　　金：辽宁省科学技术计划—社发攻关及产业化指导计划资助项目(2019JH8/10300099);中国煤炭科工集团有限公司科技创新创业资金专项资助项目(2018MS015);中国煤炭科工集团有限公司科技创新创业资金专项项目-青年资助项目(2018-2-QN012)。

摘　　要：针对开采煤与瓦斯突出煤层工作面,采取瓦斯抽采消突措施会增加采空区漏风量,进而改变采空区流场,造成采空区氧化带过长,容易引发采空区自然发火。大兴矿N2708工作面采用预埋束管进行采空区自燃"三带"观测。结果表明,受瓦斯抽采影响,氧化带最大宽度高达153m,大幅超出普通工作面采空区氧化带范围,自然发火威胁大大提高,应采取切实有效的防灭火技术措施,确保工作面安全生产。In view of the working face of coal and gas outburst,adopting the measures of gas drainage and outburst elimination will increase the air leakage in the goaf,and then change the flow field in the goaf,resulting in too long oxidation zone in the goaf,which is easy to cause the goaf spontaneous combustion.In the N2708 working face of Daxing Mine,the embedded bundle pipe is used to observe the"three zones"of spontaneous combustion in the goaf.The results show that the maximum width of the oxidation zone is up to 153 m,which is far beyond the scope of the oxidation zone in the goaf of the common working face,and the threat of spontaneous combustion is greatly increased.Therefore,effective technical measures should be taken to prevent and extinguish the fire,so as to ensure the safe production of the working face.

关 键 词：突出煤层 瓦斯抽采 采空区流场 自然发火 三带观测 

分 类 号：TD752.2[矿业工程—矿井通风与安全]