大采高综采工作面采空区自燃“三带”研究
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摘要
针对上湾煤矿12401大采高综采工作面采空区煤自燃防治,通过程序升温氧化实验确定CO作为煤自燃预报指标气体,并辅以C2H4来掌握煤自燃情况;在工作面采空区回风侧铺设束管对采空区气体进行监测,根据监测结果划分了采空区自燃"三带":距工作面0～32m处为散热带,32～225m处为自燃带,225m以外为窒息带;依据散热带和自燃带总长度及煤最短自燃发火期,计算出工作面最小安全推进速度约为6.4m/d。该研究结果为工作面防灭火措施制定提供了可靠依据。
In view of goaf spontaneous combustion prevention of 12401 fully mechanized working face with large mining height in Shangwan Coal Mine,CO is determined as prediction index gas of coal spontaneous combustion and C2 H4 is used as auxiliary index gas to master coal spontaneous combustion through temperature programmed oxidation experiment.Gas in goaf is monitored by laying beam tubes on air return side in goaf of the working face,and spontaneous combustion "three zones" in goaf were divided according to monitoring results.Heat dissipation zone is 0-32 maway from the working face,spontaneous combustion zone is 32-225 maway from the working face,and suffocation zone is 225 maway from the working face.According to total length of heat dissipation zone and spontaneous combustion zone and the minimum coal spontaneous combustion period,the minimum safe advancing speed of the working face is about 6.4 m/d.The research results can provide reliable basis for formulation of fire prevention measures on the working face.
In view of goaf spontaneous combustion prevention of 12401 fully mechanized working face with large mining height in Shangwan Coal Mine,CO is determined as prediction index gas of coal spontaneous combustion and C2 H4 is used as auxiliary index gas to master coal spontaneous combustion through temperature programmed oxidation experiment.Gas in goaf is monitored by laying beam tubes on air return side in goaf of the working face,and spontaneous combustion "three zones" in goaf were divided according to monitoring results.Heat dissipation zone is 0-32 maway from the working face,spontaneous combustion zone is 32-225 maway from the working face,and suffocation zone is 225 maway from the working face.According to total length of heat dissipation zone and spontaneous combustion zone and the minimum coal spontaneous combustion period,the minimum safe advancing speed of the working face is about 6.4 m/d.The research results can provide reliable basis for formulation of fire prevention measures on the working face.
引文
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[14]陈龙,仲晓星,李虎,等.新集二矿111300工作面采空区自燃“三带”研究[J].煤矿安全,2017,48(12):164-167.CHEN Long,ZHONG Xiaoxing,LI Hu,et al.Study on spontaneous combustion"three-zone"in gob of111300mining face in Xinji No.2 Coal Mine[J].Safety in Coal Mines,2017,48(12):164-167.
[15]WANG Lanyun,JIANG Shuguang,WU Zhengyan,et al.Oxidation kinetics regularity in spontaneous combustion of gas coal[J].International Journal of Mining Science and Technology,2010,20(1):59-63.
[2]谢军,薛生.综放采空区空间自燃三带划分指标及方法研究[J].煤炭科学技术,2011,39(1):65-68.XIE Jun,XUE Sheng.Study on division index and method of three spontaneous combustion zones in goaf of fully mechanized top coal caving mining face[J].Coal Science and Technology,2011,39(1):65-68.
[3]邓军,李贝,李珍宝,等.预报煤自燃的气体指标优选试验研究[J].煤炭科学技术,2014,42(1):55-59.DENG Jun,LI Bei,LI Zhenbao,et al.Experiment study on gas indexes optimization for coal spontaneous combustion prediction[J].Coal Science and Technology,2014,42(1):55-59.
[4]王俊峰,邬剑明,靳钟铭.一种预测采空区自燃危险区域的新方法——CFD技术的应用[J].煤炭学报,2009,34(11):1483-1488.WANG Junfeng,WU Jianming,JIN Zhongming.A new method to predict the coal spontaneous combustion zone in goaf:the application of CFD technology[J].Journal of China Coal Society,2009,34(11):1483-1488.
[5]武建军,蒋卫国,刘晓晨,等.地下煤火探测、监测与灭火技术研究进展[J].煤炭学报,2009,34(12):1669-1674.WU Jianjun,JIANG Weiguo,LIU Xiaochen,et al.Innovative technologies for exploration,monitoring and extinction of underground coal fires[J].Journal of China Coal Society,2009,34(12):1669-1674.
[6]文虎,程小蛟,许延辉,等.特厚煤层综放工作面不同漏风源位置对自燃带分布的影响[J].煤矿安全,2018,49(2):138-142.WEN Hu,CHENG Xiaojiao,XU Yanhui,et al.Influence of different air leakage locations on spontaneous combustion distribution in fully mechanized caving face of extra-thick coal seam[J].Safety in Coal Mines,2018,49(2):138-142.
[7]刘乔,王德明,仲晓星,等.基于程序升温的煤层自然发火指标气体测试[J].辽宁工程技术大学学报(自然科学版),2013,32(3):362-366.LIU Qiao,WANG Deming,ZHONG Xiaoxing,et al.Testing on indicator gases of coal spontaneous combustion based on temperature program[J].Journal of Liaoning Technical University(Natural Science),2013,32(3):362-366.
[8]武福生.预测煤自燃的复合气体指标优选实验研究[J].工矿自动化,2018,44(7):61-65.WU Fusheng.Experimental study on composite gas indexes optimization for coal spontaneous combustion prediction[J].Industry and Mine Automation,2018,44(7):61-65.
[9]宫彪.特厚综放面采空区自燃“三带”的分布规律研究[J].中国煤炭,2018,44(3):132-135.GONG Biao.Study on the distribution laws of three zone of spontaneous combustion in gob of extra-thick fully mechanized caving face[J].China Coal,2018,44(3):132-135.
[10]孟宪锐,常振兴,王永望,等.综放面采空区自燃“三带”分布规律研究[J].煤炭技术,2015,34(9):128-130.MENG Xianrui, CHANG Zhenxing, WANG Yongwang, et al. Research on spontaneous combustion"three zones"distribution regularity in goaf of full-mechanized caving face[J].Coal Technology,2015,34(9):128-130.
[11]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(自然科学版),2013,32(2):131-135.YU Minggao, CHAO Jiangkun, JIA Hailin.Comprehensive dividing method and practice of spontaneous combustion"three-zone"in goaf on fully mechanized coal face[J].Journal of Henan Polytechnic University(Natural Science),2013,32(2):131-135.
[12]王亮,张人伟,裴晓东,等.综放工作面采空区自燃“三带”的试样研究[J].煤矿现代化,2005(5):21-22.WANG Liang,ZHANG Renwei,PEI Xiaodong,et al.Trials &study on"three zones"for spontaneous combustion in complex mechanized mining workface[J].Coal Mine Modernization,2005(5):21-22.
[13]何俊,牛帅,陈亮.大倾角综放面采空区自燃“三带”分布规律研究[J].煤炭技术,2014,33(9):54-56.HE Jun,NIU Shuai,CHEN Liang.Research on spontaneous combustion"three zones"distribution regularity in goaf of full-mechanized caving face in large dip seam[J].Coal Technology,2014,33(9):54-56.
[14]陈龙,仲晓星,李虎,等.新集二矿111300工作面采空区自燃“三带”研究[J].煤矿安全,2017,48(12):164-167.CHEN Long,ZHONG Xiaoxing,LI Hu,et al.Study on spontaneous combustion"three-zone"in gob of111300mining face in Xinji No.2 Coal Mine[J].Safety in Coal Mines,2017,48(12):164-167.
[15]WANG Lanyun,JIANG Shuguang,WU Zhengyan,et al.Oxidation kinetics regularity in spontaneous combustion of gas coal[J].International Journal of Mining Science and Technology,2010,20(1):59-63.