黄白茨矿采空区自燃危险区域“三位一体”预测应用
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摘要
运用采空区束管监测,得出采空区自燃危险区域指标气体分布情况及流场气体运移规律。在此基础上对工作面采空区气体流场进行三维稳态数学建模,确定了采空区氧体积分数分布及自燃危险区域范围,同时应用同位素测氡技术探测地表氡异常区域进行验证,形成井下监测-计算机模拟-地表验证"三位一体"的采空区自燃危险区域预测的理论体系。将此方法成功应用于黄白茨矿1293工作面采空区,结果表明在当前工作面通风和回采进度条件下,采空区氧气带呈不规则"O"型分布,采空区煤自燃危险区域(氧气体积分数10%~15%)呈"U"型分布在距离工作面进风巷100~450 m,回风巷70~250 m,中部距离工作面50~140 m处。研究成果为采空区煤自燃区域精准探测提供了借鉴。
The indicative gas distribution and migration law of flowing gas in the spontaneous combustion zone are obtained by monitoring the beam pipe in goaf. On this basis,the 3 D mathematical model of the gas migration in goaf is designed,which determines the oxygen concentration distribution and hazardous area range of spontaneous combustion.At the same time,using radon detection technology to verify the abnormal area on the ground surface,forming a"Trinity"prediction system of spontaneous combustion area in goaf composed of underground monitoring,computer simulation and surface verification.This method is applied to the 1293 working face of Huangbaici Mine.The result shows,in the current ventilation and mining schedule,the oxygen distribution is irregular "O"area,and the coal spontaneous combustion zone( oxygen concentration 10%-15%) presents"U"type distribution in the distance from the intake airway 100-450 m,return airway 70-250 m,the middle distance from the working face 50-140 m.The research provides a new theoretical guidance for the accurate detection of spontaneous combustion area in goaf.
The indicative gas distribution and migration law of flowing gas in the spontaneous combustion zone are obtained by monitoring the beam pipe in goaf. On this basis,the 3 D mathematical model of the gas migration in goaf is designed,which determines the oxygen concentration distribution and hazardous area range of spontaneous combustion.At the same time,using radon detection technology to verify the abnormal area on the ground surface,forming a"Trinity"prediction system of spontaneous combustion area in goaf composed of underground monitoring,computer simulation and surface verification.This method is applied to the 1293 working face of Huangbaici Mine.The result shows,in the current ventilation and mining schedule,the oxygen distribution is irregular "O"area,and the coal spontaneous combustion zone( oxygen concentration 10%-15%) presents"U"type distribution in the distance from the intake airway 100-450 m,return airway 70-250 m,the middle distance from the working face 50-140 m.The research provides a new theoretical guidance for the accurate detection of spontaneous combustion area in goaf.
引文
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[7]杨胜强,徐全,黄金,等.采空区自燃“三带”微循环理论及漏风流场数值模拟[J].中国矿业大学学报,2009,38(6):769-773,788.YANG Shengqiang,XU Quan,HUANG Jin,et al.The“Three Zone”microcirculation theory of goaf spontaneous combustion and a numerical simulation of the air leakage flow field[J].Journal of China University of Mining&Technology,2009,38(6):769-773,788.
[8]杨胜强,程涛,徐全,等.尾巷风压及风量变化对采空区自然发火影响的理论分析与数值模拟[J].煤炭学报,2011,36(2):308-312.YANG Shengqiang,CHENG Tao,XU Quan,et al.Theoretical analysis and numerical simulation of influence of the change of negative pressure and air volume of inner interlocked tail road on coal spontaneous combustion[J].Journal of China Coal Society,2011,36(2):308-312.
[9]张辛亥,刘灿,周金生,等.综放面采空区流场模拟及自燃危险区域划分[J].西安科技大学学报,2006,26(1):6-9.ZHANG Xinhai,LIU Can,ZHOU Jinsheng,et al.Modeling of flow field and partition of spontaneous combustion danger zone in gob of fully mechanized caving face[J].Journal of Xi’an University of Science and Technology,2006,26(1):6-9.
[10]张辛亥,席光,徐精彩,等.基于流场模拟的综放面自燃危险区域划分及预测[J].北京科技大学学报,2005,27(6):641-644.ZHANG Xinhai,Xi Guang,XU Jingcai,et al.Partition of spontaneous combustion dangerous zone and prediction of spontaneous combustion base on numerically modeling the flow field at fully mechanized caving faee[J].Jounral of University of Science Technology Bei Jing,2005,27(6):641-644.
[11]时国庆,王德明,仲晓星,等.综放面采空区氧化带分布规律的CFD模拟[J].采矿与安全工程学报,2010,27(4):568-571.SHI Guoqing,WANG Deming,ZHON Xiaoxing,et al.CFD simulation of oxidation zones distribution in goaf of fully-mechanized caving face[J].Journal of Mining&Safety Engineering,2010,27(4):568-571.
[12]时国庆,王德明,奚志林,等.基于FLUENT对采空区氧气浓度场的数值模拟[J].煤炭科学技术,2009,37(6):76-79.SHI Guoqing,WANG Deming,XI Zhilin,et al.Numerical smiulation of oxygen concentration distribution in gob areas based on fluent[J].Coal Science and Technology,2009,37(6):76-79.
[13]ELIO J,ORTEGA M F,NISI B,et al.CO2and Rn degassing from the natural analog of campo de calatrava(Spain):Implications for monitoring of CO2storage sites[J].International Journal of Greenhouse Gas Control,2015,32:1-14.
[14]赵耀江,邬剑明.测氡探火机理的研究[J].煤炭学报,2003,28(3):260-263.ZHAO Yaojiang,WU Jianming.Study on mechanism of detecting underground fire by Radon measurement technique[J].Journal of China Coal Society,2003,28(3):260-263.
[15]NERI M,FERRERA E,GIAMMANCO S,et al.Soil radon measurements as a potential tracer of tectonic and volcanic activity[J].Scientific Reports,2016,6:24581.
[16]刘菁华.活断层上覆盖层中氡迁移的数值模拟及反演拟合[D].长春:吉林大学,2006.LIU Jinghua.Numerical simulation inversion fitting of radon migration in the overburden above active fault[D].Changchun:Jilin University,2006.
[17]SHAHROKHI A,BURGHELE B D,FABIAN F,et al.New study on the correlation between carbon dioxide concentration in the environment and radon monitor devices[J].Journal of Environmental Radioactivity,2015,150:57-61.
[18]邬剑明,刘艳,周春山.同位素测氡法在柳湾矿自燃火源位置探测中的应用[J].中国煤炭,2006,32(9):37-39,4.WU Jianming,LIU Yan,ZHOU Cuanshan.Application of radon measurement with isotope on the survey of fire seat location of spontaneous combustion in Liu wan mine[J].China Coal,2006,32(9):37-39,4.
[2]文虎,周洋,翟小伟,等.煤恒温条件下的氧化过程实验研究[J].煤矿安全,2013,44(10):1-3.WEN Hu,ZHOU Yang,ZHAI Xiaowei,et al.Experimental study of coal oxidation processin constant temperature condition[J].Safety in Coal Mines,2013,44(10):1-3.
[3]徐精彩,文虎,张辛亥,等.综放面采空区遗煤自燃危险区域判定方法的研究[J].中国科学技术大学学报,2002,32(6):39-44.XU Jingcai,WEN Hu,ZHANG Xinhai,et al.Study on the method for determining dangerous zones of coal self-ignition in gobs in a fully mechanized top-coal caving face[J].Journal of University of Science and Technology of China,2002,32(6):39-44.
[4]秦跃平,宋宜猛,杨小彬,等.粒度对采空区遗煤氧化速度影响的实验研究[J].煤炭学报,2010,35(S1):132-135.QIN Yueping,SONG Yimeng,YANG Xiaobin,et al.Experimental study on coal granularity influencing oxidation rate in goaf[J].Journal of China Coal Society,2010,35(S1):132-135.
[5]吴玉国,邬剑明,张东坡,等.综放工作面连续注氮下采空区气体分布及“三带”变化规律[J].煤炭学报,2011,36(6):964-967.WU Yuguo,WU Jianming,ZHANG Dongpo,et al.Distribut on law of gas and change rule of“three zones”in the goaf of fully mec-hanized top-coal caving working face under the continuous nitrogen injection[J].Journal of China Coal Society,2011,36(6):964-967.
[6]王德明.矿井通风与安全[M].徐州:中国矿业大学出版社,2010.
[7]杨胜强,徐全,黄金,等.采空区自燃“三带”微循环理论及漏风流场数值模拟[J].中国矿业大学学报,2009,38(6):769-773,788.YANG Shengqiang,XU Quan,HUANG Jin,et al.The“Three Zone”microcirculation theory of goaf spontaneous combustion and a numerical simulation of the air leakage flow field[J].Journal of China University of Mining&Technology,2009,38(6):769-773,788.
[8]杨胜强,程涛,徐全,等.尾巷风压及风量变化对采空区自然发火影响的理论分析与数值模拟[J].煤炭学报,2011,36(2):308-312.YANG Shengqiang,CHENG Tao,XU Quan,et al.Theoretical analysis and numerical simulation of influence of the change of negative pressure and air volume of inner interlocked tail road on coal spontaneous combustion[J].Journal of China Coal Society,2011,36(2):308-312.
[9]张辛亥,刘灿,周金生,等.综放面采空区流场模拟及自燃危险区域划分[J].西安科技大学学报,2006,26(1):6-9.ZHANG Xinhai,LIU Can,ZHOU Jinsheng,et al.Modeling of flow field and partition of spontaneous combustion danger zone in gob of fully mechanized caving face[J].Journal of Xi’an University of Science and Technology,2006,26(1):6-9.
[10]张辛亥,席光,徐精彩,等.基于流场模拟的综放面自燃危险区域划分及预测[J].北京科技大学学报,2005,27(6):641-644.ZHANG Xinhai,Xi Guang,XU Jingcai,et al.Partition of spontaneous combustion dangerous zone and prediction of spontaneous combustion base on numerically modeling the flow field at fully mechanized caving faee[J].Jounral of University of Science Technology Bei Jing,2005,27(6):641-644.
[11]时国庆,王德明,仲晓星,等.综放面采空区氧化带分布规律的CFD模拟[J].采矿与安全工程学报,2010,27(4):568-571.SHI Guoqing,WANG Deming,ZHON Xiaoxing,et al.CFD simulation of oxidation zones distribution in goaf of fully-mechanized caving face[J].Journal of Mining&Safety Engineering,2010,27(4):568-571.
[12]时国庆,王德明,奚志林,等.基于FLUENT对采空区氧气浓度场的数值模拟[J].煤炭科学技术,2009,37(6):76-79.SHI Guoqing,WANG Deming,XI Zhilin,et al.Numerical smiulation of oxygen concentration distribution in gob areas based on fluent[J].Coal Science and Technology,2009,37(6):76-79.
[13]ELIO J,ORTEGA M F,NISI B,et al.CO2and Rn degassing from the natural analog of campo de calatrava(Spain):Implications for monitoring of CO2storage sites[J].International Journal of Greenhouse Gas Control,2015,32:1-14.
[14]赵耀江,邬剑明.测氡探火机理的研究[J].煤炭学报,2003,28(3):260-263.ZHAO Yaojiang,WU Jianming.Study on mechanism of detecting underground fire by Radon measurement technique[J].Journal of China Coal Society,2003,28(3):260-263.
[15]NERI M,FERRERA E,GIAMMANCO S,et al.Soil radon measurements as a potential tracer of tectonic and volcanic activity[J].Scientific Reports,2016,6:24581.
[16]刘菁华.活断层上覆盖层中氡迁移的数值模拟及反演拟合[D].长春:吉林大学,2006.LIU Jinghua.Numerical simulation inversion fitting of radon migration in the overburden above active fault[D].Changchun:Jilin University,2006.
[17]SHAHROKHI A,BURGHELE B D,FABIAN F,et al.New study on the correlation between carbon dioxide concentration in the environment and radon monitor devices[J].Journal of Environmental Radioactivity,2015,150:57-61.
[18]邬剑明,刘艳,周春山.同位素测氡法在柳湾矿自燃火源位置探测中的应用[J].中国煤炭,2006,32(9):37-39,4.WU Jianming,LIU Yan,ZHOU Cuanshan.Application of radon measurement with isotope on the survey of fire seat location of spontaneous combustion in Liu wan mine[J].China Coal,2006,32(9):37-39,4.