综放工作面瓦斯涌出特点及应对措施研究
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摘要
随着煤炭开采深度的不断加大,矿井中的瓦斯水平不断攀升,对生产的安全性造成了极大威胁。本文在对保德煤矿81306工作面进行分析后得出结论,对于一次采全高式的综合机械化放顶煤开采过程中,瓦斯涌出表现为吨煤瓦斯涌出量小,但瓦斯涌出绝对量大的特点,其涌出位置主要是采空区。因此,工作面应在已有经验基础上加大送风量进行瓦斯抽排,并通过上隅角挡风帘或瓦斯稀释器等设施对重点位置进行瓦斯控制,强化巡查、检测力度,保障矿井安全生产。
As the depth of coal mining continues to increase, the level of gas in mines continues to rise, posing a great threat to the safety of production. After analyzing the No. 81306 working face of Baode Coal Mine, this paper concludes that in the process of fully mechanized top coal caving mining at one time, the gas emission shows a small amount of gas emission per ton of coal, but the absolute amount of gas emission The big feature is that its gushing location is mainly goaf. Therefore, the working face should be based on the existing experience to increase the amount of air supply for gas extraction, and through the upper corner angle curtain or gas diluter and other facilities to control the gas in key locations, strengthen inspections, inspection efforts to protect the mine safe production.
As the depth of coal mining continues to increase, the level of gas in mines continues to rise, posing a great threat to the safety of production. After analyzing the No. 81306 working face of Baode Coal Mine, this paper concludes that in the process of fully mechanized top coal caving mining at one time, the gas emission shows a small amount of gas emission per ton of coal, but the absolute amount of gas emission The big feature is that its gushing location is mainly goaf. Therefore, the working face should be based on the existing experience to increase the amount of air supply for gas extraction, and through the upper corner angle curtain or gas diluter and other facilities to control the gas in key locations, strengthen inspections, inspection efforts to protect the mine safe production.
引文
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[2]施式亮,伍爱友,李润求等.回采工作面高位钻孔抽采瓦斯效果数值模拟及方案优化[J].中国安全生产科学技术,2016(7):71-76.
[3]付帅,吕平洋,王嘉鉴等.近距离松软煤层群高位钻孔瓦斯抽采技术研究[J].煤炭科学技术, 2016(11):78-81.
[4]姚元领,司俊鸿,宋凯.高瓦斯采煤工作面瓦斯涌出量的分源预测[J].能源技术与管理,2008(6):19-21.
[5]汪东生.近距离煤层开采瓦斯立体抽采防突技术应用[J].煤炭技术,2010(10):88-89.
[6]刘建中,赵保平,孔祥义等.高位钻孔配合埋管抽放治理采面上隅角瓦斯[J].煤炭科学技术,2010(2):46-49.
[7]陈凯,杨胜强,刘亚东.石港矿15109综放工作面初采期瓦斯涌出特征分析[J].煤矿安全,2012(12):157-160.