马道头矿3-5号复合煤层分区防灭火技术
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摘要
为了解决马道头煤矿3-5号复合煤层在综放开采时采空区丢煤量大、端头漏风率高、支架间及冒顶区的浮煤浓度高、异常火区气体指标超限等问题,研究采用了采空区注氮、支架间及后方冒顶区喷洒阻化剂、异常火区注浆和端头封堵的分区防灭火技术。经在8210综放工作面试验研究,应用效果表明:回采期间采空区、工作面和支架之间的温度控制在30℃以内,CO气体始终保持在24×10-6以下,且从未出现C2H4、C2H6等标志性气体,综放工作面安全高效完成回采。
In order to solve the problems such as large amount of coal lost in goaf, high air leakage rate at the end, high concentration of floating coal between supports and roof areas, and gas index over-limit in abnormal fire area of No.3-5 composite coal seam in Madaotou Coal Mine during fully mechanized caving mining, the technologies of nitrogen injection in goaf, chemical retardant spraying between supports and rear roof area, grouting in abnormal fire area and end sealing were studied. Through the experimental study in 8210 full-mechanized caving mining face, application effect showed that, in mining period, the temperature control of the mined-out area, working face and supports between was within 30 ℃, CO gas is always kept below 24 ×10-6, and representative gas such as C2 H4 and C2 H6 has ever appeared. The fully mechanized caving face can safely and efficiently complete mining.
In order to solve the problems such as large amount of coal lost in goaf, high air leakage rate at the end, high concentration of floating coal between supports and roof areas, and gas index over-limit in abnormal fire area of No.3-5 composite coal seam in Madaotou Coal Mine during fully mechanized caving mining, the technologies of nitrogen injection in goaf, chemical retardant spraying between supports and rear roof area, grouting in abnormal fire area and end sealing were studied. Through the experimental study in 8210 full-mechanized caving mining face, application effect showed that, in mining period, the temperature control of the mined-out area, working face and supports between was within 30 ℃, CO gas is always kept below 24 ×10-6, and representative gas such as C2 H4 and C2 H6 has ever appeared. The fully mechanized caving face can safely and efficiently complete mining.
引文
[1]邓军,李贝,王凯,等.我国煤火灾害防治技术研究现状及展望[J].煤炭科学技术,2016,44(10):1-7.
[2]李波,巨广刚,王珂,等.2005-2014年年我国煤矿灾害事故特征及规律研究[J].矿业安全与环保,2016,43(3):111-114.
[3]罗海珠,梁运涛.煤自然发火预测预报技术的现状与展望[J].中国安全科学学报,2003,13(3):79-81.
[4]金永飞,郭军,邱吉龙,等.综放工作面停采撤架期间综合防灭火技术研究[J].煤炭科学技术,2014,42(2):38-40.
[5]马砺,任立峰,王乃国,等.深井高地温工作面煤自燃特点及预控方法研究[J].煤炭科学技术,2016,44(10):39-43.
[6]秦荣宏,翟小伟.孟巴矿高地温高湿环境采空区特厚遗煤自燃规律研究[J].煤矿开采,2014,19(5):100.
[7]王志权.综放工作面防灭火技术[J].煤矿安全,2017,48(1):75-76.
[8]姜进军,王伟,王刚,等.补连塔煤矿22306工作面防灭火技术[J].煤矿安全,2014,45(5):76-78.
[9]曹镜清,邬剑明,周春山,等.低位放顶煤采空区自燃区域划分与注氮口位置确定[J].煤炭科学技术,2017,45(2):89-94.
[10]朱红青.顶煤自燃危险性分析及注氮防火的理论研究[J].煤炭学报,2012,37(6):1015-1020.
[11]尹晓雷.综采面动态注氮作用下采空区“三带”分布及防灭火技术研究[J].中国安全生产科学技术,2014,10(10):137-142.
[12]史波波.煤矿液氮防灭火技术应用及发展趋势[J].煤矿安全,2014,45(10):154-157.
[2]李波,巨广刚,王珂,等.2005-2014年年我国煤矿灾害事故特征及规律研究[J].矿业安全与环保,2016,43(3):111-114.
[3]罗海珠,梁运涛.煤自然发火预测预报技术的现状与展望[J].中国安全科学学报,2003,13(3):79-81.
[4]金永飞,郭军,邱吉龙,等.综放工作面停采撤架期间综合防灭火技术研究[J].煤炭科学技术,2014,42(2):38-40.
[5]马砺,任立峰,王乃国,等.深井高地温工作面煤自燃特点及预控方法研究[J].煤炭科学技术,2016,44(10):39-43.
[6]秦荣宏,翟小伟.孟巴矿高地温高湿环境采空区特厚遗煤自燃规律研究[J].煤矿开采,2014,19(5):100.
[7]王志权.综放工作面防灭火技术[J].煤矿安全,2017,48(1):75-76.
[8]姜进军,王伟,王刚,等.补连塔煤矿22306工作面防灭火技术[J].煤矿安全,2014,45(5):76-78.
[9]曹镜清,邬剑明,周春山,等.低位放顶煤采空区自燃区域划分与注氮口位置确定[J].煤炭科学技术,2017,45(2):89-94.
[10]朱红青.顶煤自燃危险性分析及注氮防火的理论研究[J].煤炭学报,2012,37(6):1015-1020.
[11]尹晓雷.综采面动态注氮作用下采空区“三带”分布及防灭火技术研究[J].中国安全生产科学技术,2014,10(10):137-142.
[12]史波波.煤矿液氮防灭火技术应用及发展趋势[J].煤矿安全,2014,45(10):154-157.