千米深井超长工作面过断层期间防灭火技术

发布时间：2018-06-13 11:08

本文选题：煤炭自燃 + 过断层　；参考：《煤矿安全》2015年07期

【摘要】：针对口孜东矿111303工作面过断层期间因推进速度慢、浮煤堆积多且空间大、动力灾害频繁引起的采空区遗煤自燃严重的问题。在减少工作面风量、降低工作面的抽采负压及强化防火监测监控的基础上,对采空区实行连续注氮,增加高温隐患点的灌浆次数,对工作面架间埋管注液体CO2,着重对易自燃区域定点注浆、注水、充填瑞米材料,各项技术相互配合、相互补充。通过对工作面上隅角、工作面高抽巷及工作面重点区域CO情况进行分析,得知遗煤自燃已经得到很好的控制,各项监测指标也在合理范围内,有效保证了111303工作面过断层期间安全回采。
[Abstract]:In view of the serious problem of coal spontaneous combustion in goaf caused by frequent dynamic disasters due to the slow speed of advancing and the accumulation of floating coal and the large space during the crossing fault of 111303 working face in Kou Zidong Coal Mine. On the basis of reducing the air volume of the working face, reducing the negative pressure of the mining face and strengthening the monitoring and monitoring of fire prevention, continuous nitrogen injection is carried out in the goaf to increase the grouting frequency of the hidden spot of high temperature. The liquid CO _ 2 is injected into the interframe pipe of the working face, and the fixed point grouting, water injection and filling of rice material are emphasized in the spontaneous combustion area, and the various technologies cooperate and complement each other. Through the analysis of the CO situation in the upper corner of the working face, the high extraction roadway of the working face and the key area of the working face, it is known that the spontaneous combustion of the residual coal has been well controlled, and the monitoring indexes are within a reasonable range. It effectively ensures the safety of mining during the period of 111303 face crossing fault.
【作者单位】：安徽理工大学能源与安全学院;煤矿安全高效开采省部共建教育部重点实验室;国投新集能源股份有限公司口孜东煤矿;
【分类号】：TD753

【参考文献】