[1]李博,游波,张慧杰,等.不同粒径煤的瓦斯放散初期规律实验研究*[J].中国安全生产科学技术,2023,19(4):64-70.[doi:10.11731/j.issn.1673-193x.2023.04.009]
LI Bo,YOU Bo,ZHANG Huijie,et al.Experimental study on law of gas emission of coal with different particle sizes at initial stage[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(4):64-70.[doi:10.11731/j.issn.1673-193x.2023.04.009]
点击复制
不同粒径煤的瓦斯放散初期规律实验研究*
LI Bo,YOU Bo,ZHANG Huijie,et al.Experimental study on law of gas emission of coal with different particle sizes at initial stage[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(4):64-70.[doi:10.11731/j.issn.1673-193x.2023.04.009]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 19
- 期数:
- 2023年4期
- 页码:
- 64-70
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2023-04-30
文章信息/Info
- Title:
- Experimental study on law of gas emission of coal with different particle sizes at initial stage
- 文章编号:
- 1673-193X(2023)-04-0064-07
- Keywords:
- gas emission; dynamic diffusion coefficient; tectonic coal; attenuation coefficient; particle size
- 分类号:
- X936
- 文献标志码:
- A
- 摘要:
- 为了研究钻屑粒径差异对瓦斯放散初期特征的影响，开展恒温煤粒瓦斯放散实验，采用动扩散系数模型分析不同粒径原生煤与构造煤的瓦斯放散初期过程。研究结果表明：在0.25~3.00 mm粒径范围内，原生煤与构造煤的初期瓦斯解吸量均随粒径的增大而减小，相同粒径条件下构造煤初期瓦斯解吸量大于原生煤初期瓦斯解吸量；采用分数式衰减的动扩散系数模型能较好地描述煤粒瓦斯放散初期过程；原生煤与构造煤的初始扩散系数均随粒径的增大而增大，衰减系数均随粒径的增大而减小；原生煤与构造煤瓦斯放散初期过程产生差异的主要原因是孔隙结构不同。研究结果可为煤与瓦斯突出预测技术研究提供理论参考。
- Abstract:
- In order to study the influence of the particle size difference of drill cuttings on the characteristics of gas emission at initial stage,the gas emission experiments of coal particles at a constant temperature were conducted,and the dynamic diffusion coefficient model was used to analyze the initial process of gas emission of the original coal and tectonic coal with different particle sizes.The results showed that in the range of 0.25~3.00 mm particle size,both the initial gas desorption capacities of original coal and tectonic coal decreased with the increase of particle size.Under the same particle size,the initial gas desorption capacity of tectonic coal was greater than that of original coal.The dynamic diffusion coefficient model with fractional attenuation could better describe the initial process of gas emission of coal particle.Both the initial diffusion coefficients of original coal and tectonic coal increased with the increase of particle size,and both the attenuation coefficients decreased with the increase of particle size.The main reason for the difference in the initial process of gas emission between original coal and tectonic coal is the difference of pore structure.The research results provide theoretical reference for the research on prediction technology of coal and gas outburst.
参考文献/References:
［1］邓楠.煤层瓦斯含量直接测定取样技术研究进展［J］.矿业安全与环保,2021,48(4):113-117.
DENG Nan.Research status on direct measurement and sampling technology for coal seam gas content［J］.Mining Safety & Environmental Protection,2021,48(4):113-117.
［2］张慧杰,霍中刚,舒龙勇,等.构造煤发育区K1值低指标煤与瓦斯突出原因分析［J］.煤炭科学技术,2019,47(7):82-87.
ZHANG Huijie,HUO Zhonggang,SHU Longyong,et al.Cause analysis on coal and gas outburst in low index with K1 value of tectonic coal developed area［J］.Coal Science and Technology,2019,47(7):82-87.
［3］陈进朝,王兆丰,杨宏民,等.K1值预测时低指标突出现象的原因分析及解决方法［J］.煤矿安全,2012,43(6):145-147.
CHEN Jinchao,WANG Zhaofeng,YANG Hongmin,et al.The cause analysis and solutions of low-index outburst phenomenon during K1 value forecast［J］.Safety in Coal Mines,2012,43(6):145-147.
［4］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):87-94.
YANG Qiluan,WANG Youan.Theory of mechane diffusion from coal cuttings and its application［J］.Journal of China Coal Society,1986(3):87-94.
［5］WANG Y,XUE S,XIE J.A general solution and approximation for the diffusion of gas in a spherical coal sample［J］.International Journal of Mining Science and Technology,2014,24(3):345-348.
［6］刘彦伟.煤粒瓦斯放散规律、机理与动力学模型研究［D］.焦作：河南理工大学,2011.
［7］AIREY E M.Gas emission from broken coal ［J］.International Journal of Rock Mechanics and Mining,1968,5(6):475-494.
［8］秦跃平,郝永江,刘鹏,等.煤粒瓦斯放散模型对比分析［J］.煤矿安全,2015,46(4):144-147.
QIN Yueping,HAO Yongjiang,LIU Peng,et al.Comparison analysis on gas emission model of coal particle［J］.Safety in Coal Mines,2015,46(4):144-147.
［9］WINTER K,JANAS H.Gas emission characteristics of coal and methods of determining the desorbable gas content by means of desorbometers［C］//XIV International Conference of Coal Mine Safety Research,1996.
［10］俞启香.矿井瓦斯防治［M］.徐州:中国矿业大学出版社，1992.
［11］袁军伟.颗粒煤瓦斯扩散时效特性研究［D］.北京:中国矿业大学（北京）,2014.
［12］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,et al.Mechanism of gas diffusion in tectonic coal based on a diffusion model with dynamic diffusion coefficient［J］.Journal of China University of Mining & Technology,2015,44(5):836-842.
［13］程小庆，王兆丰，李志强.动扩散系数新模型下不同粒径构造煤的瓦斯扩散特征［J］.中国安全生产科学技术,2016,12(6):88-93.
CHENG Xiaoqing,WANG Zhaofeng,LI Zhiqiang.Features of gas diffusion in tectonic coal with different particle sizes by new model of dynamic diffusion coefficient［J］.Journal of Safety Science and Technology,2016,12(6):88-93.
［14］刘彦伟,李通,薛文涛.软硬煤瓦斯扩散系数动态变化规律的差异性［J］.煤矿安全,2017,48(9):17-20.
LIU Yanwei,LI Tong,XUE Wentao.Difference of dynamic variation laws of gas diffusion coefficient of soft and hard coal ［J］.Safety in Coal Mines,2017,48(9):17-20.
［15］陈学习,高泽帅,金霏阳,等.不同粒径煤的瓦斯解吸扩散特性实验研究［J］.华北科技学院学报,2022,19(4):1-6.
CHEN Xuexi,GAO Zeshuai,JIN Feiyang,et al.Experimental studies on gas desorption and diffusion characteristics of coal with different particle size ［J］.Journal of North China Institute of Science and Technology,2022,19(4):1-6.
［16］杨涛,聂百胜.煤粒瓦斯解吸实验中的初始有效扩散系数［J］.辽宁工程技术大学学报(自然科学版),2016,35(11):1225-1229.
YANG Tao,NIE Baisheng.Initial effective diffusion coefficient of gas based on gas desorption experiment［J］.Journal of Liaoning Technical University(Natural Science),2016,35(11):1225-1229.
［17］段正鹏,李志强,陈向军,等.多尺度煤粒与瓦斯多尺度动扩散系数模型特征参数关系研究［J］.中国安全生产科学技术,2018,14(6):97-102.
DUAN Zhengpeng,LI Zhiqiang,CHEN Xiangjun,et al.Study on relationship between multi-scale coal particles and characteristic parameters of gas multi-scale dynamic diffusion coefficient model［J］.Journal of Safety Science and Technology,2018,14(6):97-102.
［18］张慧杰.时间因素对钻屑瓦斯解吸指标K1值测定的影响分析［J］.中国安全生产科学技术,2020,16(5):51-56.
ZHANG Huijie.Analysis on influence of time factor on measurement of gas desorption index (K1) of drill cuttings［J］.Journal of Safety Science and Technology,2020,16(5):51-56.
［19］聂百胜,杨涛,李祥春,等.煤粒瓦斯解吸扩散规律实验［J］.中国矿业大学学报,2013,42(6):975-981.
NIE Baisheng,YANG Tao,LI Xiangchun,et al.Research on diffusion methane in coal particles［J］.Journal of China University of Mining & Technology,2013,42(6):975-981.
［20］富向,王魁军,杨宏伟,等.煤粒瓦斯放散规律数学模型的应用［J］.煤矿安全,2006(12):1-3.
FU Xiang,WANG Kuijun,YANG Hongwei,et al.Application of methane diffusion law mathematical model of coal particle［J］.Safety in Coal Mines,2006(12):1-3.
［21］李云波.构造煤瓦斯解吸初期特征实验研究［D］.焦作：河南理工大学,2011.
［22］薛洪来,关城,付帅,等.含瓦斯煤粒前期扩散理论模型及解析解［J］.煤矿安全,2018,49(3):164-167.
XUE Honglai,GUAN Cheng,FU Shuai,et al.Theoretical model of early diffusion in coal particles containing methane and its analytical solution［J］.Safety in Coal Mines,2018,49(3):164-167.
［23］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.
［24］王振洋,程远平.构造煤与原生结构煤孔隙特征及瓦斯解吸规律试验［J］.煤炭科学技术,2017,45(3):84-88.
WANG Zhenyang,CHENG Yuanping.Experiment on pore characteristics and gas desorption law of structural coal and primary structure coal［J］.Coal Science and Technology,2017,45(3):84-88.
［25］李铭杰,卢守青,司书芳,等.粒径损伤对原生煤和构造煤孔隙结构与分形特征的影响［J］.中国安全生产科学技术,2022,18(7):88-94.
LI Mingjie,LU Shouqing,SI Shufang,et al.Influence of particle size damage on pore structure and fractal characteristics of intact coal and tectonic coal［J］.Journal of Safety Science and Technology,2022,18(7):88-94.
相似文献/References:
[1]张逸斌,齐庆杰,张浪,等.煤体结构对瓦斯解吸放散特征影响试验研究[J].中国安全生产科学技术,2018,14(6):103.[doi:10.11731/j.issn.1673-193x.2018.06.016]
ZHANG Yibin,QI Qingjie,ZHANG Lang,et al.Experimental study on influence of coal structure on gas desorption and emission characteristics[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(4):103.[doi:10.11731/j.issn.1673-193x.2018.06.016]
备注/Memo
- 备注/Memo:
-
收稿日期： 2022-09-27
* 基金项目： 煤炭科学技术研究院科技发展基金项目（2020CX-II-16）；2022年湖南省大学生创业训练项目（湘教通［2022］174号第3420项）；2022年大学生科研创新计划（SRIP）项目
作者简介： 李博，硕士研究生，主要研究方向为煤矿瓦斯灾害防治。
