负压环境下含瓦斯煤扩散特性试验研究
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- 英文论文题名：Experiment study on diffusion features of gassy coal under negative pressure environment
- 论文作者：陈向军 ; 段正鹏 ; 刘洋 ; 王鹏
- 英文论文作者：Chen Xiangjun ; Duan Zhengpeng ; Liu Yang ; Wang Peng ; Henan Provincial Key Lab of Gas Geology and Control-Cultivation Base of Provincial and Ministry Joint State Key Lab ; Henan Provincial Collaborative Innovation Center of Coal Safety and Production ; MOE Engineering and Research Center of Mine Disaster Prevention and Rescue
- 年：2016
- 作者机构：河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地;煤炭安全生产河南省协同创新中心;煤矿灾害预防与抢险救灾教育部工程研究中心;
- 论文关键词：负压环境 ; 解吸速度 ; 扩散率 ; 扩散系数
- 英文论文关键词：negative pressure environment ; desorption rate ; diffusion rate ; diffusion coefficient
- 会议召开时间：2016-11-29
- 会议录名称：第三届煤炭科技创新高峰论坛——煤炭绿色开发与清洁利用技术与装备论文集
- 语种：中文
- 分类号：TD712
- 学会代码：ZGMT
- 会议名称：第三届煤炭科技创新高峰论坛——煤炭绿色开发与清洁利用技术与装备
- 会议地点：中国北京
- 主办单位：中国煤炭工业协会、中国煤炭科工集团有限公司、中国煤炭学会、煤炭科学研究总院
- 学会名称：中国煤炭学会
- 页数：6
- 文件大小：832k
- 原文格式：O
- 会议级别：全国
摘要
为了揭示含瓦斯煤在负压环境下的扩散特性,在实验室分别模拟了0、10、20、30、40 kPa负压环境下含瓦斯煤的扩散解吸过程,对比分析了不同负压环境下的瓦斯解吸量、解吸速度、扩散率和扩散系数的变化情况。试验结果表明:瓦斯解吸量随环境负压的增加逐渐增大,360 min时累计解吸量最大增加37.45%,负压具有促进煤中瓦斯解吸的作用;负压对前15 min内瓦斯解吸速度的影响比较显著,尤其对前3 min内瓦斯解吸速度影响最大,衰减高达60%左右,15 min后负压对解吸速度的影响较弱;吸附平衡压力相同条件下,瓦斯扩散率、扩散系数均随着负压的增大而增大;负压增大引起扩散系数的增大是促进瓦斯解吸的主要原因。
In order to reveal the diffusion features of the gassy coal in the negative pressure environment,the diffusion and desorption processes of the gassy coal were simulated under the negative pressure environment of 0,10,20,30 and 40 kPa in the lab and a comparison analysis was conducted on the gas desorption volume,desorption rate,diffusion rate and diffusion coefficient under different negative pressure environment.The results showed that the gas desorption volume would be steadily increased with the environment pressure increased,the accumulated desorption volume within 360 minutes would be increased by 37.45%in max and the negative pressure would have a role to promote the gas desorption of the coal.Before the first 15 minutes,the negative pressure would have obvious influences to the gas desorption rate,especially would have a max influence to the gas desorption rate within the first three minutes,the attenuation was about 60%and after the first 15 minutes,the negative pressure would have less influences to the desorption rate.Under the same condition of desorption balanced pressure,the gas diffusion coefficient and the diffusion coefficient would all be increased with the negative pressure increased.The negative pressure increased would cause the diffusion coefficient increased and would be the main factor to promote the gas desorption.
In order to reveal the diffusion features of the gassy coal in the negative pressure environment,the diffusion and desorption processes of the gassy coal were simulated under the negative pressure environment of 0,10,20,30 and 40 kPa in the lab and a comparison analysis was conducted on the gas desorption volume,desorption rate,diffusion rate and diffusion coefficient under different negative pressure environment.The results showed that the gas desorption volume would be steadily increased with the environment pressure increased,the accumulated desorption volume within 360 minutes would be increased by 37.45%in max and the negative pressure would have a role to promote the gas desorption of the coal.Before the first 15 minutes,the negative pressure would have obvious influences to the gas desorption rate,especially would have a max influence to the gas desorption rate within the first three minutes,the attenuation was about 60%and after the first 15 minutes,the negative pressure would have less influences to the desorption rate.Under the same condition of desorption balanced pressure,the gas diffusion coefficient and the diffusion coefficient would all be increased with the negative pressure increased.The negative pressure increased would cause the diffusion coefficient increased and would be the main factor to promote the gas desorption.
引文
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[11]陈向军,程远平,王林.水分对不同煤阶煤瓦斯放散初速度的影响[J].煤炭科学技术,2012,40(12):62-65.Chen Xiangjun,Cheng Yuanping,Wang Lin.Moisture content affected to initial gas emission velocity of different ranking coal[J J.Coal Science and Technology,2012,40(12):62-65.
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[13]王兆丰,岳高伟,康博,等.低温环境对煤的瓦斯解吸抑制效应试验[J].重庆大学学报,2014,37(9):106-112.Wang Zhaofeng,Yue Gaowei,Kang Bo,et al.Gas desorb inhibitory effect of coal in low temperature environment[J].Journal of Chongqing University,2014,37(9):106-112.
[14]谢策,王兆丰,康博.低温下温度对无烟煤瓦斯吸附能力的影响[J].煤炭技术,2015,34(4):164-166.Xie Ce,Wang Zhaofeng,Kang Bo.Influence in environment of low temperature to adsorption capacity of anthracite coal[J].Coal Technology,2015,34(4):164-166.
[15]何满潮,王春光,李德建,等.单轴应力-温度作用下煤中吸附瓦斯解吸特征[J].岩石力学与工程学报,2010,29(5):865-872.He Manchao,Wang Chunguang,Li Dejian,et al.Desorb characteristics of adsorbed gas in coal samples under coupling temperature and uniaxial compression[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(5):865-872.
[16]李志强,王登科,宋党育.新扩散模型下温度对煤粒瓦斯动态扩散系数的影响[J].煤炭学报,2015,40(5):1055-1064.Li Zhiqiang,Wang Dengke.Song Dangyu.Influence of temperature on dynamic diffuse coefficient of CH_4into coal particles by new diffuse model[J].Journal of China Coal Society,2015,40(5):1055-1064.
[17]李志强,王司建,刘彦伟,等.基于动扩散系数新扩散模型的构造煤瓦斯扩散机理[J].中国矿业大学学报,2015,44(5):836-842.Li Zhiqiang,Wang Sijian,Liu Yanwei,e?al.Mechanism of gas diffuse in tectonic coal based on a diffuse model with dynamic diffuse coefficient[J].Journal of China University of Mining&Technology,2015,44(5):836-842.
[18]李志强,段振伟,景国勋.不同温度下煤粒瓦斯扩散特性试验研究与数值模拟[J].中国安全科学学报,2012,22(4):38-42.Li Zhiqiang,Duan Zhenwei.Jing Guoxun.Experimental study on gas diffuse characteristics from coal at different temperatures and their numerical simulation[J].China Safety Science Journal,2012,22(4):38-42.
[19]张洪良,王兆丰,陈向军.负压环境下煤的瓦斯解吸规律试验研究[J].河南理工大学学报:自然科学版,2011.30(6):634-637.Zhang Hongliang,Wang Zhaofeng,Chen Xiangjun.Study on the law of gas desorb under negative pressure[J].Journal of Henan Polytechnic University:Natural Science,2011,30(6):634-637.
[20]聂百胜,杨涛,李祥春,等.煤粒瓦斯解吸扩散规律试验[J].中国矿业大学学报,2013,42(6):975-981.Nie Baisheng,Yang Tao,Li Xiangchun,et al.Research on diffuse of methane in coal particles[J].Journal of China University of Mining&Technology,2013,42(6):975-981.
[2]王魁军,张兴华.中国煤矿瓦斯抽采技术发展现状与前景[J].中国煤层气,2006,3(1):13-16.Wang Kuijun,Zhang Xinghua.Current status and prospects of CMM drainage technologies in China[J].China Coalbed Methane,2006,3(1):13-16.
[3]卢平,袁亮,程桦,等.低透气性煤层群高瓦斯采煤工作面强化抽采卸压瓦斯机理及试验[J].煤炭学报,2010,35(4):580-585.Lu Ping,Yuan Liang,Cheng Hua,et al.Theory and xperimental studies of enhanced gas drainage in the high-gas face of low permeability coalmultiseams[J].Journal of China Coal Society,2010,35(4):580-585.
[4]袁亮.卸压开采抽采瓦斯理论及煤与瓦斯共采技术体系[J].煤炭学报,2009,34(1):1-8.Yuan Liang.Theory of pressure-relieved gas extraction and technique system of integrated coal production and gas extraction[J].Journal of China Coal Society,2009,34(1):1-8.
[5]程远平,付建华,俞启香.中国煤矿瓦斯抽采技术的发展[J].采矿与安全工程学报,2009,26(2):127-139.Cheng Yuanping,Fu Jianhua,Yu Qixiang.Development of gas ext raction technology in coal mines of China[J].Journal of Mining&Safety Engineering,2009,26(2):127-139.
[6]袁亮,薛俊华,张农,等.煤层气抽采和煤与瓦斯共采关键技术现状与展望[J].煤炭科学技术,2013,41(9):6-11.Yuan Liang,Xue Junhua,Zhang Nong,et al.Development orientation and status of key technology for mine underground coalbed methane drainage as well as coal and gas simultaneous mining[J].Coal Science and Technology,2013,41(9):6-11.
[7]李志强,王兆丰.井下注气强化煤层气抽采效果的工程试验与数值模拟[J].重庆大学学报,2011,34(4):72-77.Li Zhiqiang,Wang Zhaofeng.Test and numerical simulation on effect of enhanced coalbed methane drawing by injecting gas under coal mine[J].Journal of Chongqing University,2011,34(4):72-77.
[8]陈向军,程远平,何涛,等.注水对煤的瓦斯扩散特性影响[J].采矿与安全工程学报,2013,30(3):443-448.Chen Xiangjun,Cheng Yuanping,He Tao,et al.Water injection impact on gas diffuse characteristic of coal[J].Journal of Mining&Safety Engineering,2013,30(3):443-448.
[9]陈向军,程远平.注水对煤层吸附瓦斯解吸影响的试验研究[J].煤炭科学技术,2014,42(6):96-99.Chen Xiangjun,Cheng Yuanping.Experiment study on water injection affected to desorb of coal adsorption gas[J].Coal Science and Technology,2014,42(6):96-99.
[10]陈向军,程远平,王林.外加水分对煤中瓦斯解吸抑制作用试验研究[J].采矿与安全工程学报,2013,30(2):296-301.Chen Xiangjun,Cheng Yuanping,Wang Lin.Experimental study on the inhibition of injection water to the gasdesorb of coal[J].Journal of Mining&Safety Engineering,2013,30(2):296-301.
[11]陈向军,程远平,王林.水分对不同煤阶煤瓦斯放散初速度的影响[J].煤炭科学技术,2012,40(12):62-65.Chen Xiangjun,Cheng Yuanping,Wang Lin.Moisture content affected to initial gas emission velocity of different ranking coal[J J.Coal Science and Technology,2012,40(12):62-65.
[12]王兆丰,康博,岳高伟,等.低温环境无烟煤瓦斯解吸特性研究[J].河南理工大学学报:自然科学版,2014,33(6):705-709.Wang Zhaofeng,Kang Bo,Yue Gaowei.et al.Study on gas desorb characteristics of anthracite in low temperature environment[J].Journal of Henan Polytechnic University:Natural Science,2014,33(6):705-709.
[13]王兆丰,岳高伟,康博,等.低温环境对煤的瓦斯解吸抑制效应试验[J].重庆大学学报,2014,37(9):106-112.Wang Zhaofeng,Yue Gaowei,Kang Bo,et al.Gas desorb inhibitory effect of coal in low temperature environment[J].Journal of Chongqing University,2014,37(9):106-112.
[14]谢策,王兆丰,康博.低温下温度对无烟煤瓦斯吸附能力的影响[J].煤炭技术,2015,34(4):164-166.Xie Ce,Wang Zhaofeng,Kang Bo.Influence in environment of low temperature to adsorption capacity of anthracite coal[J].Coal Technology,2015,34(4):164-166.
[15]何满潮,王春光,李德建,等.单轴应力-温度作用下煤中吸附瓦斯解吸特征[J].岩石力学与工程学报,2010,29(5):865-872.He Manchao,Wang Chunguang,Li Dejian,et al.Desorb characteristics of adsorbed gas in coal samples under coupling temperature and uniaxial compression[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(5):865-872.
[16]李志强,王登科,宋党育.新扩散模型下温度对煤粒瓦斯动态扩散系数的影响[J].煤炭学报,2015,40(5):1055-1064.Li Zhiqiang,Wang Dengke.Song Dangyu.Influence of temperature on dynamic diffuse coefficient of CH_4into coal particles by new diffuse model[J].Journal of China Coal Society,2015,40(5):1055-1064.
[17]李志强,王司建,刘彦伟,等.基于动扩散系数新扩散模型的构造煤瓦斯扩散机理[J].中国矿业大学学报,2015,44(5):836-842.Li Zhiqiang,Wang Sijian,Liu Yanwei,e?al.Mechanism of gas diffuse in tectonic coal based on a diffuse model with dynamic diffuse coefficient[J].Journal of China University of Mining&Technology,2015,44(5):836-842.
[18]李志强,段振伟,景国勋.不同温度下煤粒瓦斯扩散特性试验研究与数值模拟[J].中国安全科学学报,2012,22(4):38-42.Li Zhiqiang,Duan Zhenwei.Jing Guoxun.Experimental study on gas diffuse characteristics from coal at different temperatures and their numerical simulation[J].China Safety Science Journal,2012,22(4):38-42.
[19]张洪良,王兆丰,陈向军.负压环境下煤的瓦斯解吸规律试验研究[J].河南理工大学学报:自然科学版,2011.30(6):634-637.Zhang Hongliang,Wang Zhaofeng,Chen Xiangjun.Study on the law of gas desorb under negative pressure[J].Journal of Henan Polytechnic University:Natural Science,2011,30(6):634-637.
[20]聂百胜,杨涛,李祥春,等.煤粒瓦斯解吸扩散规律试验[J].中国矿业大学学报,2013,42(6):975-981.Nie Baisheng,Yang Tao,Li Xiangchun,et al.Research on diffuse of methane in coal particles[J].Journal of China University of Mining&Technology,2013,42(6):975-981.
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