温度和放散空间体积对等容变压法测定瓦斯放散初速度的影响分析
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摘要
在煤矿煤与瓦斯突出防治工作中,瓦斯放散初速度(ΔP)是一个重要的指标。通过资料对比、理论分析、实验研究对瓦斯放散初速度测定中温度、放散空间体积等对测定的影响进行了研究。研究表明瓦斯放散初速度在煤样一定的情况下与放散空间体积和实验温度有关。随着温度的升高,瓦斯放散初速度减小,减小的幅度和煤样自身的瓦斯放散初速度大小有关。放散空间体积越大,瓦斯放散初速度越小;不同煤样放散空间体积对瓦斯放散初速度影响不同。建议瓦斯放散初速度测定应在恒定温度下进行,实验温度建议与井下温度相同,仪器的放散空间体误差应小于1 mL。
The gas initial emission velocity(ΔP) is an important and widely used indicator in coal mine and gas outburst prevention work.This paper researched temperature and dissipate space volume affected to the determination of gas initial emission velocity based on data comparison,theoretical analysis and experimental research.The research results showed that gas initial emission velocity was related to temperature and dissipate space volume in certain cases of coal samples,with the increase of temperature,the gas initial emission velocity decreased,and the extent of the reduction was related to the initial velocity of the coal sample itself.The larger the volume of the dissipating space and the smaller the initial gas velocity had a corresponding relationship,the influence of the dissipate space volume of different coal samples on gas initial emission velocity was different.It is recommended that the gas initial emission velocity measurement should be conducted at a constant temperature,the experimental temperature should be the same as the downhole temperature,and the instrument's dispersion space body error should be less than 1 mL.
The gas initial emission velocity(ΔP) is an important and widely used indicator in coal mine and gas outburst prevention work.This paper researched temperature and dissipate space volume affected to the determination of gas initial emission velocity based on data comparison,theoretical analysis and experimental research.The research results showed that gas initial emission velocity was related to temperature and dissipate space volume in certain cases of coal samples,with the increase of temperature,the gas initial emission velocity decreased,and the extent of the reduction was related to the initial velocity of the coal sample itself.The larger the volume of the dissipating space and the smaller the initial gas velocity had a corresponding relationship,the influence of the dissipate space volume of different coal samples on gas initial emission velocity was different.It is recommended that the gas initial emission velocity measurement should be conducted at a constant temperature,the experimental temperature should be the same as the downhole temperature,and the instrument's dispersion space body error should be less than 1 mL.
引文
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[16]尚显光,温志辉,陈永超.构造煤瓦斯放散特性及其影响因素分析[J].煤,2011,20(6):31-32.Shang Xianguang,Wen Zhihui,Chen Yongchao.Analysis on discharging characteristics of tectonic coal gas and its influencing factors[J].Coal,2011,20(6):31-32.
[17]王伟东.无烟煤放散初速度与煤样湿度关系研究[J].能源技术与管理,2016,41(1):25-27.Wang Weidong.Study on relationship between initial speed of anthracite dispersed coal and humidity of coal samples[J].Energy Technology and Management,2016,41(1):25-27.
[18]刘彦伟,刘明举.粒度对软硬煤粒瓦斯解吸扩散差异性的影响[J].煤炭学报,2015,40(3):579-587.Liu Yanwei,Liu Mingju.Effect of particle size on difference of gas desorption and diffusion between soft coal and hard coal[J].Journal of China Coal Society,2015,40(3):579-587.
[19]徐乐华,蒋承林.煤的挥发分与瓦斯放散初速度的关系研究[J].煤矿安全,2011,42(7):21-22.Xu Lehua,Jiang Chenglin.Study on relation between coal's volatility and initial speed of methane emission[J].Safety in Coal Mines,2011,42(7):21-22.
[20]刘军,王兆丰.煤变质程度对瓦斯放散初速度的影响[J].辽宁工程技术大学学报,2013(6):745-748.Liu Jun,Wang Zhaofeng.Relation between metamorphic grade and initial velocity of gas diffusion[J].Journal of Liaoning Technical University(Natural Science),2013(6):745-748.
[2]刘志伟.关于煤与瓦斯突出鉴定工作若干问题的分析及探讨[J].矿业安全与环保,2014(5):113-115.Liu Zhiwei.Analysis and discussion on some problems about identification of coal and gas outburst[J].Mining Safety and Environmental Protection,2014(5):113-115.
[3]赵欣.瓦斯放散初速度等容变压式测定方法研究[D].北京:煤炭科学研究总院,2015.
[4]尚显光.瓦斯放散初速度影响因素实验研究[D].焦作:河南理工大学,2011.
[5]郑迎春,宋聪聪.WT-1型瓦斯放散初速度测定仪的应用[J].中国新技术新产品,2010(17):7.Zheng Yingchun,Song Congcong.Application of WT-1 gas dispersion initial velocity tester[J].China New Technology and New Products,2010(17):7.
[6]曹垚林,富向,蒋清华.WT-2000型瓦斯放散速度测定仪的研制及其在淮南矿区的应用[J].煤矿安全,2005,36(7):19-22.Cao Kunlin,Fu Xiang,Jiang Qinghua.Development of WT-2000gas dispersion velocity measuring instrument and its application in Huainan Mining Area[J].Safety in Coal Mines,2005,36(7):19-22.
[7]常宇,李柏均,任文贤,等.瓦斯放散初速度指标(ΔP)测定仪的研制[J].矿业安全与环保,2012,39(6):29-31.Chang Yu,Li Baijun,Ren Wenxian,et al.Development of a gas emission initial velocity indicator(ΔP)measuring instrument[J].Mining Safety and Environmental Protection,2012,39(6):29-31.
[8]国家安全生产监督管理总局.AQ 1080-2009《煤的瓦斯放散初速度指标(ΔP)测定方法》[M].北京:煤炭工业出版社,2010.
[9]林海飞,丁智超,李树刚,等.煤样瓦斯放散性能多因素敏感性试验研究[J].安全与环境学报,2016,16(4):168-172.Lin Haifei,Ding Zhichao,Li Shugang,et al.Experimental study for the sensitivity of the coal-gas diffusion tendency under the impact of multi-factors[J].Journal of Safety and Environment,2016,16(4):168-172.
[10]李晓伟,蒋承林.温度对瓦斯放散初速度测定的影响研究[J].煤矿安全,2009,40(1):1-3.Li Xiaowei,Jiang Chenglin.Study on effect of temperature on initial speed of methane emission[J].Safety in Coal Mines,2009,40(1):1-3.
[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].Coal Science and Technology,2012,40(12):62-65.
[12]贾东旭,孙景来.不同变质程度煤体破碎度对瓦斯放散初速度的影响[J].煤炭科学技术,2013,41(8):68-70.Jia Dongxu,Sun Jinglai.Fragmentation of different metamorphic degree coal affected to initial velocity of gas emission[J].Coal Science and Technology,2013,41(8):68-70.
[13]康建宁.吸附压力对瓦斯放散初速度(ΔP)测定的影响研究[J].煤矿安全,2010,41(4):4-5.Kang Jianning.Influence study on initial speed of methane diffusion by adsorption pressure[J].Safety in Coal Mines,2010,41(4):4-5.
[14]徐乐华,蒋承林.煤的坚固性系数和瓦斯放散初速度测定过程的影响因素分析[J].煤炭技术,2012,31(1):93-94.Xu Lehua,Jiang Chenglin.Influence factors analysis on fastness coefficient and initial speed of methane emission determination[J].Coal Technology,2012,31(1):93-94.
[15]谭蓉晖,王兆丰,杨宏民.吸附平衡时间对瓦斯放散初速度的影响[J].煤炭科学技术,2012,40(5):46-48.Tan Ronghui,Wang Zhaofeng,Yang Hongmin.Adsorption equilibrium time affected to initial velocity of gas emission[J].Coal Science and Technology,2012,40(5):46-48.
[16]尚显光,温志辉,陈永超.构造煤瓦斯放散特性及其影响因素分析[J].煤,2011,20(6):31-32.Shang Xianguang,Wen Zhihui,Chen Yongchao.Analysis on discharging characteristics of tectonic coal gas and its influencing factors[J].Coal,2011,20(6):31-32.
[17]王伟东.无烟煤放散初速度与煤样湿度关系研究[J].能源技术与管理,2016,41(1):25-27.Wang Weidong.Study on relationship between initial speed of anthracite dispersed coal and humidity of coal samples[J].Energy Technology and Management,2016,41(1):25-27.
[18]刘彦伟,刘明举.粒度对软硬煤粒瓦斯解吸扩散差异性的影响[J].煤炭学报,2015,40(3):579-587.Liu Yanwei,Liu Mingju.Effect of particle size on difference of gas desorption and diffusion between soft coal and hard coal[J].Journal of China Coal Society,2015,40(3):579-587.
[19]徐乐华,蒋承林.煤的挥发分与瓦斯放散初速度的关系研究[J].煤矿安全,2011,42(7):21-22.Xu Lehua,Jiang Chenglin.Study on relation between coal's volatility and initial speed of methane emission[J].Safety in Coal Mines,2011,42(7):21-22.
[20]刘军,王兆丰.煤变质程度对瓦斯放散初速度的影响[J].辽宁工程技术大学学报,2013(6):745-748.Liu Jun,Wang Zhaofeng.Relation between metamorphic grade and initial velocity of gas diffusion[J].Journal of Liaoning Technical University(Natural Science),2013(6):745-748.