煤层注NaHCO_3溶液防治H_2S方法及效果研究
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摘要
为防治矿井硫化氢(H_2S)涌出危害,提出采用煤层注碳酸氢钠(Na HCO_3)溶液的方法治理硫化氢。以某矿为例,采集硫化氢涌出煤层煤样,在实验室对其进行可注性和渗透性试验;到现场观测矿井硫化氢涌出特征,在E902和W910工作面实施煤层注碳酸氢钠溶液试验。研究表明:9号煤层为可注性煤层;支承应力区煤层渗透性差;硫化氢涌出量受回采强度影响较大,日割煤刀数越多,硫化氢涌出量越大,停采时涌出量较低;超前工作面25~50 m,煤层注碱流量较高,为0.2~0.5 m3/h;注碱量越大,硫化氢涌出量降幅越大。
In order to control the hydrogen sulfide emission of coal mine,a treatment method by injecting alkali solution into coal seams was worked out. A certain mine was taken as a case. Injectivity and permeability of the coal seam were tested to demonstrate the coal can be injected. It was found that areas with increased stress have poor permeability. H_2 S emission regularity was studied and field tests were carried out at E902 and W910 workface. The results show that the sulfide emission volume is influenced by mining intensity,the greater the coal production is,the greater emission,volume will be,that ahead working face25- 50 m,higher alkali solution,about 0. 2- 0. 5 m~3/ h,could be injected into coal,and that hydrogen sulfide emission will be reduced greatly by injecting a sufficient quantity of sodium bicarbonate solution.
In order to control the hydrogen sulfide emission of coal mine,a treatment method by injecting alkali solution into coal seams was worked out. A certain mine was taken as a case. Injectivity and permeability of the coal seam were tested to demonstrate the coal can be injected. It was found that areas with increased stress have poor permeability. H_2 S emission regularity was studied and field tests were carried out at E902 and W910 workface. The results show that the sulfide emission volume is influenced by mining intensity,the greater the coal production is,the greater emission,volume will be,that ahead working face25- 50 m,higher alkali solution,about 0. 2- 0. 5 m~3/ h,could be injected into coal,and that hydrogen sulfide emission will be reduced greatly by injecting a sufficient quantity of sodium bicarbonate solution.
引文
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[13]MT/T 1023-2006,煤层注水可注性鉴定方法[S].MT/T 1023-2006,Judging method of infusibility for coal seam infusion[S].
[14]梁冰,袁欣鹏,孙福玉,等.钻屑法测定煤层H2S含量[J].中国安全科学学报,2015,25(2):100-105.LIANG Bing,YUAN Xinpeng,SUN Fuyu,et al.Determination of hydrogen sulfide content of coal by drilling cutting method[J].China Safety Science Journal,2015,25(2):100-105.
[15]袁欣鹏,梁冰,孙维吉,等.煤层注碱治理矿井硫化氢涌出危害研究[J].中国安全科学学报,2015,25(5):114-120.YUAN Xinpeng,LIANG Bing,SUN Weiji,et al.Research on control of mine hydrogen sulfide emission by injecting sodium bicarbonate solution into coal seams[J].China Safety Science Journal,2015,25(5):114-120.
[2]王红岩,万天丰,李景明,等.区域构造热事件对高煤阶煤层气富集的控制[J].地学前缘,2008,15(5):364-369.WANG Hongyan,WAN Tianfeng,LI Jingming,et al.The control of tectonic thermal events on the concentration of high coal-rank coalbed methane[J].Earth Science Frontiers,2008,15(5):364-369.
[3]汤达祯,杨起,周春光,等.华北晚古生代成煤沼泽微环境与煤中硫的成因关系研究[J].中国科学:D辑,2000,30(6):584-591.TANG Dazhen,YANG Qi,ZHOU Chunguang,et al.The coal swamps and microenvironment of sulfur in coal genetic relationship study of late palaeozoic in north China[J].Science in China Series D,2000,30(6):584-591.
[4]郦宗元,戚务铭.矿内硫化氢防治的探讨[J].煤矿安全,1988,19(9):30-35.LI Zongyuan,QI Wuming.Discussion on prevention of coal H2S[J].Safety in Coal Mines,1988,19(9):30-35.
[5]彭本信,郦宗元,张建华,等.乌达矿区硫化氢综合防治技术[J].煤炭科学技术,1992,20(9):23-27.PENG Benxin,LI Zongyuan,ZHANG Jianhua,et al.Comprehensive control of sulfureted hydrogen technology in Wuda mining area[J].Coal Science and Technology,1992,20(9):23-27.
[6]王建,王宁波,漆涛,等.急倾斜煤层硫化氢气体侵蚀规律与综合治理[J].西安科技大学学报,2009,29(6):677-680.WANG Jian,WANG Ningbo,QI Tao,et al.Application of grey related method in analysis of influencing factors on backfill drilling holes[J].Journal of Xi'an University of Science and Technology,2009,29(6):677-680.
[7]张少杰,田水承,刘文永,等.煤矿硫化氢成因及综合治理技术[J].陕西煤炭,2011,29(5):77-79.ZHANG Shaojie,TIAN Shuicheng,LIU Wenyong,et al.On causes of mine hydrogen sulfide and comprehensive control technology[J].Shaanxi Meitan,2011,29(5):77-79.
[8]张广太.煤矿硫化氢赋存机理及治理研究[D].太原:太原理工大学,2007.ZHANG Guangtai.H2S deposition mechanism and management research in coal mines[D].Taiyuan:Taiyuan University of Technology,2007.
[9]李北城.西曲矿治理硫化氢注碱参数研究[J].山西煤炭,2009,29(3):31-35.LI Beicheng.Alkali injection to control H2S in Xiqu mine[J].Shanxi Coal,2009,29(3):31-35.
[10]王可新,傅雪海.煤矿瓦斯中H2S异常的治理方法分析[J].煤炭科学技术,2007,35(1):94-96.WANG Kexin,FU Xuehai.Analysis on control method of H2S anomaly in mine gas[J].Coal Science and Technology,2007,35(1):94-96.
[11]李侠.霍西煤田的波浪状镶嵌构造[J].西安地质学院学报,1983,8(2):42-49.LI Xia.Wavy mosaic structure Huoxi coalfield[J].Journal of Xi'an Geological Institute,1983,8(2):42-49.
[12]国家安全生产监督管理局,国家煤矿安全监察局.煤矿安全规程(2014年)[M].北京:中国法制出版社,2014:17-19.State Administration of Work Safety,State Administration of Coal Mine Safety.Coal mine safety regulations(2014)[M].Beijing:China Legal Publishing House,2014∶17-19.
[13]MT/T 1023-2006,煤层注水可注性鉴定方法[S].MT/T 1023-2006,Judging method of infusibility for coal seam infusion[S].
[14]梁冰,袁欣鹏,孙福玉,等.钻屑法测定煤层H2S含量[J].中国安全科学学报,2015,25(2):100-105.LIANG Bing,YUAN Xinpeng,SUN Fuyu,et al.Determination of hydrogen sulfide content of coal by drilling cutting method[J].China Safety Science Journal,2015,25(2):100-105.
[15]袁欣鹏,梁冰,孙维吉,等.煤层注碱治理矿井硫化氢涌出危害研究[J].中国安全科学学报,2015,25(5):114-120.YUAN Xinpeng,LIANG Bing,SUN Weiji,et al.Research on control of mine hydrogen sulfide emission by injecting sodium bicarbonate solution into coal seams[J].China Safety Science Journal,2015,25(5):114-120.