浅埋藏工作面漏风特征及堵漏效果检验

发布时间：2018-06-03 03:38

本文选题：浅埋藏 + 工作面漏风　；参考：《煤炭工程》2017年10期

【摘要】：基于浅埋藏煤层采空区受地表裂隙诱导漏风的影响,从采空区煤自燃防治为出发点,以磁窑沟煤矿10-2号煤层10202工作面为研究对象,通过示踪气体,得到了浅埋藏工作面漏风特征。并通过堵漏技术措施前后漏风对比分析,验证了工作面堵漏效果。研究结果表明:进风巷至工作面倾向30m左右范围内为漏入段,倾向30m至回风侧为漏出段,且地表漏风通道存在;进风风流漏入采空区风量为161.2m3/min,地表漏出风量90m3/min;实施封堵措施后,进风风流漏入采空区降低到76.1m3/min,地表漏风降低到24m3/min。整体漏风量与堵漏技术实践前后降低了85.1m3/min,堵漏效果比较显著。通过对漏风及堵漏实践的分析,识别了工作面漏风特征及堵漏效果,对指导矿井的防灭火实践具有重要的现实意义。
[Abstract]:Based on the influence of air leakage induced by surface fissures in the goaf of shallow buried coal seam, the prevention and control of spontaneous combustion of coal in goaf are taken as the starting point. The 10202 coal face of No. 10-2 coal seam in Ciyaogou coal mine is taken as the research object, and the tracer gas is used to trace the gas. The air leakage characteristics of shallow buried face are obtained. Through the contrast analysis of air leakage before and after the leak plugging technology measures, the effect of leakage plugging in working face is verified. The results show that the leakage section is within the range of 30 m from entry roadway to working face, the leakage section is inclined to 30 m to the return air side, and the surface air leakage passage exists, and the air volume of air flow leakage into goaf is 161.2 m3 / min, and the surface leakage air volume is 90 m3 / min; after the implementation of plugging measures, The air leakage into the goaf was reduced to 76.1m3 / min, and the surface air leakage was reduced to 24m3 / min. The overall air leakage and plugging technology were reduced by 85.1 m3 / min before and after practice, and the plugging effect was remarkable. Based on the analysis of air leakage and plugging practice, the characteristics of air leakage and the effect of plugging are identified, which is of great practical significance to guiding the practice of fire prevention and extinguishing in coal mines.
【作者单位】：山西河曲晋神磁窑沟煤业有限公司;河南理工大学安全科学与工程学院;
【分类号】：TD728

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