安阳矿区构造煤瓦斯扩散动力学特性实验研究
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摘要
为研究安阳矿区构造煤瓦斯扩散动力学特性,在大众矿、龙山矿和贺驼矿分别采取2个(共6个)煤样。采用工业分析、高压吸附试验和瓦斯解吸试验等方法分析煤样的多元物性参数。运用球形扩散模型,采用Origin软件拟合解吸数据,计算出瓦斯扩散系数。结果表明,大众矿、龙山矿和贺驼矿煤样的挥发分分别为20.16%,12.10%和19.01%,变质程度由高到低为:龙山矿>贺驼矿>大众矿;大众、龙山和贺驼煤样的吸附常数a分别为37.26,52.36,41.30 m~3/t,瓦斯吸附能力由大到小为:龙山矿>贺驼矿>大众矿;龙山矿、大众矿和贺驼矿煤样扩散系数分别为9.567 5×10~(-10),5.294 3×10~(-10),2.384 7×10~(-10) m~2/s,瓦斯扩散能力由大到小为:龙山矿>大众矿>贺驼矿。表明龙山构造煤瓦斯吸附和扩散能力最强,煤与瓦斯突出危险性最大。
In order to study the diffusion kinetics characteristics of tectonic coal methane in the Anyang mining area,two(a total of six) coal samples were taken in Dazhong Coal Mine,Longshan Coal Mine and Hetuo Coal Mine.The multi-physical parameters of coal samples were analyzed by proximate analysis,high pressure adsorption test and gas desorption test.The spherical diffusion model and the Origin software were used to fit the desorption data to calculate the gas diffusion coefficient.The results showed that the volatiles of Dazhong Coal Mine,Longshan Coal Mine and Hetuo Coal Mine coal samples were 20.16%,12.10% and 19.01%,and the degree of metamorphism was from high to low:Longshan Coal Mine>Hetuo Coal Mine> Dazhong Coal Mine;and the adsorption constants of the Dazhong Coal Mine,Longshan Coal Mine and Hetuo Coal Mine coal samples were 37.26 m~3/t,52.36 m~3/t and 41.30 m~3/t,and the gas adsorption capacity was from large to small:Longshan Coal Mine> Hetuo Coal Mine> Dazhong Coal Mine;and the diffusion coefficient of Longshan,Dazhong and Hetao coal samples were 9.567 5×10~(-10) m~2/s,5.294 3×10~(-10) m~2/s and 2.384 7×10~(-10) m~2/s,and the gas diffusion capacity was from large to small:Longshan Coal Mine> Dazhong Coal Mine> Hetuo Coal Mine.It indicated that the coal adsorption and diffusion capacity of Longshan tectonic coal were the strongest,and the risk of coal and gas outburst was the greatest.
In order to study the diffusion kinetics characteristics of tectonic coal methane in the Anyang mining area,two(a total of six) coal samples were taken in Dazhong Coal Mine,Longshan Coal Mine and Hetuo Coal Mine.The multi-physical parameters of coal samples were analyzed by proximate analysis,high pressure adsorption test and gas desorption test.The spherical diffusion model and the Origin software were used to fit the desorption data to calculate the gas diffusion coefficient.The results showed that the volatiles of Dazhong Coal Mine,Longshan Coal Mine and Hetuo Coal Mine coal samples were 20.16%,12.10% and 19.01%,and the degree of metamorphism was from high to low:Longshan Coal Mine>Hetuo Coal Mine> Dazhong Coal Mine;and the adsorption constants of the Dazhong Coal Mine,Longshan Coal Mine and Hetuo Coal Mine coal samples were 37.26 m~3/t,52.36 m~3/t and 41.30 m~3/t,and the gas adsorption capacity was from large to small:Longshan Coal Mine> Hetuo Coal Mine> Dazhong Coal Mine;and the diffusion coefficient of Longshan,Dazhong and Hetao coal samples were 9.567 5×10~(-10) m~2/s,5.294 3×10~(-10) m~2/s and 2.384 7×10~(-10) m~2/s,and the gas diffusion capacity was from large to small:Longshan Coal Mine> Dazhong Coal Mine> Hetuo Coal Mine.It indicated that the coal adsorption and diffusion capacity of Longshan tectonic coal were the strongest,and the risk of coal and gas outburst was the greatest.
引文
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[15] 杨其銮,王佑安.煤屑瓦斯扩散理论及其应用[J].煤炭学报,1986(3):89-96.Yang Qiluan,Wang Youan.Theory of methane diffusion from coal cuttings and its application[J].Journal of China Coal Society,1986(3):89-96.
[16] 聂百胜,郭勇义,吴世跃,等.煤粒瓦斯扩散的理论模型及其解析解[J].中国矿业大学学报,2001,30(1):19-22.Nie Baisheng,Guo Yongyi,Wu Shiyue,et al.Theoretical model of gas diffusion through coal particles and its analytical solution[J].Journal of China University of Mining & Technology,2001,30(1):19-22.
[17] Lu Shouqing,Cheng Yuanping,Qin Liming,et al.Gas desorption characteristics of the high-rank intact coal and fractured coal[J].International Journal of Mining Science and Technology,2015,25(5):819-825.
[18] Dong Jun,Cheng Yuanping,Liu Qingquan,et al.Apparent and true diffusion coefficients of methane in coal and their relationships with methane desorption capacity[J].Energy & Fuels,2017,31(3):2643-2651.
[19] Zhao Wei,Cheng Yuanping,Pan Zhejun,et al.Modeling and experiments for transient diffusion coefficients in the desorption of methane through coal powders[J].International Journal of Heat and Mass Transfer,2017,110:845-854.
[20] Jiang Jingyu,Zhang Qiang,Cheng Yuanping,et al.Influence of thermal metamorphism on CBM reservoir characteristics of low-rank bituminous coal[J].Journal of Natural Gas Science and Engineering,2016,36(9):16-30.
[2] 屈争辉.构造煤结构及其对瓦斯特性的控制机理研究[J].煤炭学报,2011,36(3):533-534.Qu Zhenghui.Study of tectonized coal texture and its controlling mechanism on gas properties[J].Journal of China Coal Society,2011,36(3):533-534.
[3] 李友谊,王宇红,杨昌永.基于低温液氮吸附实验的成庄井田3号煤孔隙特征研究[J].能源与环保,2019,41(4):104-108,113.Li Youyi,Wang Yuhong,Yang Changyong.Study on pore characteristics of No.3 coal in Chengzhuang Mine Field based on low temperature liquid nitrogen adsorption experiment[J].China Energy and Environmental Protection,2019,41(4):104-108,113.
[4] 陈卓,雷东记,张玉贵.构造煤纳米级孔隙对瓦斯吸附能力的影响研究[J].煤矿安全,2019,50(3):1-4.Chen Zhuo,Lei Dongji,Zhang Yugui.Study on influence of nanoscale pores of tectonic coal on gas adsorption capacity[J].Safety in Coal Mines,2019,50(3):1-4.
[5] 赵发军,陈学习,刘明举.软煤和硬煤的甲烷吸附扩散特性对比[J].煤田地质与勘探,2016,44(4):59-63.Zhao Fajun,Chen Xuexi,Liu Mingju.Comparison of methane adsorption and diffusion characteristics in soft and hard coal[J].Coal Geology & Exploration,2016,44(4):59-63.
[6] 陈向军,刘军,王林,等.不同变质程度煤的孔径分布及其对吸附常数的影响[J].煤炭学报,2013,38(2):294-300.Chen Xiangjun,Liu Jun,Wang Lin,et al.Influence of pore size distribution of different metamorphic grade of coal on adsorption constant[J].Journal of China Coal Society,2013,38(2):294-300.
[7] 孟召平,刘珊珊,王保玉,等.不同煤体结构煤的吸附性能及其孔隙结构特征[J].煤炭学报,2015,40(8):1865-1870.Meng Zhaoping,Liu Shanshan,Wang Baoyu,et al.Adsorption capacity and its pore structure of coals with different coal body structure[J].Journal of China Coal Society,2015,40(8):1865-1870.
[8] 李庆庆,何倩.大佛寺4号煤等量吸附热分析[J].能源与环保,2018,40(12):132-134.Li Qingqing,He Qian.Equivalent adsorption thermal analysis of Dafosi No.4 coal[J].China Energy and Environmental Protection,2018,40(12):132-134.
[9] 李磊,李惠林,李恒.低煤阶煤纳米孔特征及其对吸附解吸影响[J].中国煤炭,2018,44(9):33-37.Li Lei,Li Huilin,Li Heng.Research on nanopore characteristics of low rank coal and their influence on coalbed methane adsorption and desorption[J].China Coal,2018,44(9):33-37.
[10] 张少锋,李雅阁,秦兴林.沁水盆地煤储层孔隙分形特征及其对瓦斯吸附的影响[J].煤炭科学技术,2019,47(3):163-167.Zhang Shaofeng,Li Yage,Qin Xinglin.Pore fractal characteristic of coal reservoirs in Qinshui Basin and its influence on methane adsorption property[J].Coal Science and Technology,2019,47(3):163-167.
[11] 谷小虎,海国栋,周文生,等.热解煤气吸附动力学研究[J].能源与环保,2018,40(3):53-59,65.Gu Xiaohu,Hai Guodong,Zhou Wensheng,et al.Study on adsorption kinetics of pyrolysis gas[J].China Energy and Environmental Protection,2018,40(3):53-59,65.
[12] 林晨,贾天让,周市伟,等.颗粒煤甲烷吸附过程扩散特征[J].煤田地质与勘探,2018,46(4):44-49.Lin Chen,Jia Tianrang,Zhou Shiwei,et al.Diffusion characteristics of methane adsorption process in granular coal[J].Coal Geology & Exploration,2018,46(4):44-49.
[13] 秦跃平,王翠霞,王健,等.煤粒瓦斯放散数学模型及数值解算[J].煤炭学报,2012(9):1466-1471.Qin Yueping,Wang Cuixia,Wang Jian,et al.Mathematical model of gas emission in coal particles and the numerical solution[J].Journal of China Coal Society,2012(9):1466-1471.
[14] 张飞燕,韩颖.煤屑瓦斯扩散规律研究[J].煤炭学报,2013,38(9):1589-1596.Zhang Feiyan,Han Ying.Research on the law of gas diffusion from drill cuttings[J].Journal of China Coal Society,2013,38(9):1589-1596.
[15] 杨其銮,王佑安.煤屑瓦斯扩散理论及其应用[J].煤炭学报,1986(3):89-96.Yang Qiluan,Wang Youan.Theory of methane diffusion from coal cuttings and its application[J].Journal of China Coal Society,1986(3):89-96.
[16] 聂百胜,郭勇义,吴世跃,等.煤粒瓦斯扩散的理论模型及其解析解[J].中国矿业大学学报,2001,30(1):19-22.Nie Baisheng,Guo Yongyi,Wu Shiyue,et al.Theoretical model of gas diffusion through coal particles and its analytical solution[J].Journal of China University of Mining & Technology,2001,30(1):19-22.
[17] Lu Shouqing,Cheng Yuanping,Qin Liming,et al.Gas desorption characteristics of the high-rank intact coal and fractured coal[J].International Journal of Mining Science and Technology,2015,25(5):819-825.
[18] Dong Jun,Cheng Yuanping,Liu Qingquan,et al.Apparent and true diffusion coefficients of methane in coal and their relationships with methane desorption capacity[J].Energy & Fuels,2017,31(3):2643-2651.
[19] Zhao Wei,Cheng Yuanping,Pan Zhejun,et al.Modeling and experiments for transient diffusion coefficients in the desorption of methane through coal powders[J].International Journal of Heat and Mass Transfer,2017,110:845-854.
[20] Jiang Jingyu,Zhang Qiang,Cheng Yuanping,et al.Influence of thermal metamorphism on CBM reservoir characteristics of low-rank bituminous coal[J].Journal of Natural Gas Science and Engineering,2016,36(9):16-30.
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