综放工作面Y型通风方式下的采空区自燃“三带”研究
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摘要
为了研究高河煤矿3#煤层W1310工作面采空区在Y型通风(柔膜墙沿空留巷支护)、高抽巷情况下采空区遗煤自燃发火规律、"三带"分布范围,对采空区遗煤自燃做出超前预测。通过在工作面布置束管监测系统,抽取采空区气体并用气相色谱仪化验,分析O_2、CO、CO_2、CH_4、C_2H_2、C_2H_4、C_2H_6等气体浓度变化,综合考虑来划分采空区自燃"三带"范围。最终确定"三带"范围,进风侧:散热带:0～45m;氧化升温带:45～135m;窒息带:大于135m。回风侧:散热带:0～20m;氧化升温带:20～43m;窒息带:大于43m。月推进速度大于70. 8m/月。实践表明,与工作面实际情况非常符合,防止了采空区自燃,为W1310工作面防灭火提供了有效的技术指导。
In order to study the law of spontaneous combustion of coal left behind and the "three belts"distribution range in goafs under the conditions of Y-type ventilation method( supported by soft-membrane wall along side roadway) and high-level drainage roadway in the goaf of No. 3 coal seam in Gaohe Coal Mine,the advance Prediction of Coal Spontaneous Combustion in Goaf. By arranging the bundle tube monitoring system on the working face,the gas is analyzed by gas chromatograph in the goaf area,and the concentration changes of gases such as O_2,CO,CO_2,CH_4,C_2H_2,C_2H_4,C_2H_6 are analyzed,and these factors are taken into consideration to divide the goaf spontaneous combustion " three belts" range. The scope of the"three belts"was finally determined. On the intake side: heat dissipation zone: 0～45 m; oxidation temperature rise zone: 45～ 135 m; asphyxiation zone: greater than 135 m. At the return side: heat dissipation zone: 0 ～ 20 m; oxidation temperature rising zone: 20 ～ 43 m; suffocation zone: greater than 43 m. The monthly advance speed is greater than 70. 8 m/month. The practice shows that it is very consistent with the actual situation of the working face,and prevents spontaneous combustion in the goaf,and provide effective technical guidance for fire prevention and extinguishing of the W1310 working face.
In order to study the law of spontaneous combustion of coal left behind and the "three belts"distribution range in goafs under the conditions of Y-type ventilation method( supported by soft-membrane wall along side roadway) and high-level drainage roadway in the goaf of No. 3 coal seam in Gaohe Coal Mine,the advance Prediction of Coal Spontaneous Combustion in Goaf. By arranging the bundle tube monitoring system on the working face,the gas is analyzed by gas chromatograph in the goaf area,and the concentration changes of gases such as O_2,CO,CO_2,CH_4,C_2H_2,C_2H_4,C_2H_6 are analyzed,and these factors are taken into consideration to divide the goaf spontaneous combustion " three belts" range. The scope of the"three belts"was finally determined. On the intake side: heat dissipation zone: 0～45 m; oxidation temperature rise zone: 45～ 135 m; asphyxiation zone: greater than 135 m. At the return side: heat dissipation zone: 0 ～ 20 m; oxidation temperature rising zone: 20 ～ 43 m; suffocation zone: greater than 43 m. The monthly advance speed is greater than 70. 8 m/month. The practice shows that it is very consistent with the actual situation of the working face,and prevents spontaneous combustion in the goaf,and provide effective technical guidance for fire prevention and extinguishing of the W1310 working face.
引文
[1]何满潮,徐敏. HEMS深井降温系统研发及热害控制对策[J].岩石力学与工程学报,2008(7):1353-1361.
[2]迟恩波.我国煤矿安全生产的保障:矿井火灾的防治[J].中国高新技术企业,2008(18):99.
[3]刘忠全,郝宇.综放采空区自燃“三带”分布影响因素研究[J].煤炭工程,2017,49(10):94-96.
[4]王德明.矿井火灾学[M].徐州:中国矿业大学出版社,2008.
[5]宋万新,杨胜强,徐全.基于氧气体积分数的高瓦斯采空区自燃“三带”的划分[J]采矿与安全工程学报,2012,29(2):271-276.
[6]魏远.潞安矿区3#煤层构造煤孔隙结构与瓦斯解吸特性研究[D].北京:煤炭科学研究总院,2016.
[7]余明高,晁江坤,贾海林.综放面采空区自燃“三带”的综合划分方法与实践[J].河南理工大学学报,2013,32(2):131-135.
[8]吴玉海.近距离自燃煤层回撤工作面防灭火技术研究[J].煤炭工程,2017(S2):134-137.
[9]宋万新,杨胜强,蒋春林,等.含瓦斯风流条件下煤自燃产物CO生成规律的实验研究[J].煤炭学报,2012,37(8):1320-1324.
[10]余明高,常绪华,贾海林,等.基于Matlab采空区自燃“三带”的分析[J].煤炭学报,2010,35(4):600-604.
[2]迟恩波.我国煤矿安全生产的保障:矿井火灾的防治[J].中国高新技术企业,2008(18):99.
[3]刘忠全,郝宇.综放采空区自燃“三带”分布影响因素研究[J].煤炭工程,2017,49(10):94-96.
[4]王德明.矿井火灾学[M].徐州:中国矿业大学出版社,2008.
[5]宋万新,杨胜强,徐全.基于氧气体积分数的高瓦斯采空区自燃“三带”的划分[J]采矿与安全工程学报,2012,29(2):271-276.
[6]魏远.潞安矿区3#煤层构造煤孔隙结构与瓦斯解吸特性研究[D].北京:煤炭科学研究总院,2016.
[7]余明高,晁江坤,贾海林.综放面采空区自燃“三带”的综合划分方法与实践[J].河南理工大学学报,2013,32(2):131-135.
[8]吴玉海.近距离自燃煤层回撤工作面防灭火技术研究[J].煤炭工程,2017(S2):134-137.
[9]宋万新,杨胜强,蒋春林,等.含瓦斯风流条件下煤自燃产物CO生成规律的实验研究[J].煤炭学报,2012,37(8):1320-1324.
[10]余明高,常绪华,贾海林,等.基于Matlab采空区自燃“三带”的分析[J].煤炭学报,2010,35(4):600-604.