谢桥矿1242(3)大采高超长工作面收作期间综合防火技术
Comprehensive Fire Prevention Technology in Xieqiao Mine 1242(3) Large Mining Height and Long Working Face
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摘要: 针对谢桥矿1242(3)工作面收作拆除时间超长以及架后留有大量遗煤等特殊情况,从煤层自然发火条件出发,分析了1242(3)工作面收作期间发生遗煤自燃的原因,并根据现场实际情况,采取了喷注LFM隔绝采空区漏风技术、顶板钻孔采空区全覆盖注浆防火技术、上隅角埋管注浆防火技术、注液态CO2以及注氮等综合防灭火技术。实践效果表明,采空区CO体积分数有效地控制在20×10-6,有效地保障了工作面的顺利拆除封闭。Abstract: In view of the special circumstances of Xieqiao Mine 1242(3) working face, such as the extremely long time taken to dismantle and the large amount of coal left behind after the supporting, based on the spontaneous combustion condition of coal seam, the causes of spontaneous combustion of residual coal in 1242 (3) working face are analyzed. According to the actual situation of the site, the comprehensive fire-fighting technologies, such as the injection of LFM to isolate air leakage in goaf, grouting fire prevention technology for full coverage of goaf in roof drilling, grouting fire prevention technology for upper corner pipe, liquid CO2 injection and nitrogen injection, are adopted. Practical results show that CO volume fraction in goaf is effectively controlled at 20×10-6, effectively ensuring the smooth removal and sealing of working face.
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Keywords:
- large mining height /
- coal spontaneous combustion /
- grouting /
- nitrogen injection /
- roof drilling /
- fire control
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[1] 文虎,胡伟,刘文永,等.色连二矿12205工作面收作期间防火技术[J].煤矿安全,2017,48(4):75-78. [2] 李明强.谢桥煤矿煤层自然发火综合防治技术及其应用[J].现代矿业,2012(6):105-106. [3] 朱贵旺,何吉春,漆旺生. 采用综合防灭火技术处理综采工作面采空区的自然发火[J].煤矿安全,2000, 31(1):97-103. [4] 余洋,周站涛,张青宣.LFM轻型防火充填材料在治理煤层自燃发火中的应用[J].煤炭技术,2008,27(2):86-87. [5] 张宁波,纪寿德,刘天一,等.LFM防火材料在新岭矿防灭火技术中的应用[C]∥中国煤炭学会开采专业委员会2010年学术年会论文集.北京:中国煤炭学会开采专业委员会,2010. [6] 彭献清,王昌.综采工作面回撤防灭火控制技术[J].煤炭技术,2016,35(12):202-204. [7] 姜凤林,郑国兴,许广和,等.羊草煤业公司二井采煤工作面封闭注氮防火枝术分析[J].煤矿安全,2006, 37(7):23-25. [8] 马洪涛,孙秉成,王坤,等.特厚煤层综放工作面防灭火技术[J].煤矿安全,2017,48(10):80-82. [9] 宣德全,苑铎,曹拓拓.跃进矿综放面末采及拆除期间防火技术研究[J].煤炭技术,2014,33(12):177-178. [10] 宋先明,夏孝明,张玉贞,等.综放面末采及停采撤出期间防治煤层自然发火技术探讨[J].煤矿安全,2009,40(1):71-74.
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