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[1]郭军杰,秦启荣,程晓阳.基于地层条件下煤层瓦斯流动模拟研究[J].中国安全生产科学技术,2016,12(6):25-29.[doi:10.11731/j.issn.1673-193x.2016.06.005]
　GUO Junjie,QIN Qirong,CHENG Xiaoyang.Simulation of gas flow based on geological conditions of coal seam[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(6):25-29.[doi:10.11731/j.issn.1673-193x.2016.06.005]
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基于地层条件下煤层瓦斯流动模拟研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年6期
页码:
25-29
栏目:
学术论著
出版日期:
2016-06-30

文章信息/Info

Title:
Simulation of gas flow based on geological conditions of coal seam
作者:
郭军杰1; 2; 秦启荣1; 程晓阳3
(1.西南石油大学 地球科学与技术学院，四川 成都 610500；2.河南工程学院 安全工程学院，河南 郑州 451191； 3.河南理工大学 能源科学与工程学院，河南 焦作 454000）
Author(s):
GUO Junjie1; 2;  QIN Qirong1;  CHENG Xiaoyang3
(1. School of Geoscience and Technology, Southwest Petroleum University, Chengdu Sichuan 610500, China; 2. School of Safety Engineering, Henan Institute of Engineering, Zhengzhou Henan 451191, China; 3. School of Energy Science and Engineering, Henan polytechnic University, Jiaozuo Henan 454000, China)
关键词:
瓦斯流动机制; 纳米孔隙; 瓦斯抽采; 深部煤层
Keywords:
gas flow mechanism;  nanometer pore;  gas drainage;  deep coal seam
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2016.06.005
文献标志码:
A
摘要:
为了研究地层条件下瓦斯流动特点，通过建立瓦斯吸附-解吸、扩散和渗流综合流动数学模型，分析不同埋深条件下瓦斯流动机制，并模拟吸附层和滑脱效应对瓦斯流动的影响。结果表明：随煤层埋深增加，部分纳米孔隙内瓦斯流动机制由扩散过渡到渗流，这有利于瓦斯运移；在煤层深部，瓦斯吸附层和滑脱效应对瓦斯渗流作用影响不大；随埋深增加，瓦斯吸附层对瓦斯运移影响逐步增大，而滑脱效应则逐步弱化；在埋深相同时，两者对瓦斯运移的影响都随孔隙直径增大而减小。研究有助于深入了解瓦斯在深部煤层流动的机制，提高深部煤层瓦斯抽采效果。
Abstract:
In order to study the gas flow characteristics under geological conditions of coal seam, a comprehensive mathematical model of gas flow considering the adsorption-desorption, diffusion and seepage of gas was proposed. The gas flow mechanism under different buried depth was analyzed, and the influence of adsorption layer and slippage effect on gas flow were simulated. The results showed that with the increase of buried depth, the gas flow mechanism in partial nanometer pores transits from diffusion into seepage, which is beneficial to gas migration. In deep coal seam, the influence of gas adsorption layer and slippage effect on gas seepage is slightly. With the increase of buried depth, the influence of gas adsorption layer on gas migration increases gradually, while that of slippage effect reduces gradually. With the same buried depth, both the influence of gas adsorption layer and slippage effect on gas migration decrease with the increase of pore diameter. It contributes to further understand the gas flow mechanism and improve the gas drainage effect in deep coal seam.

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备注/Memo

备注/Memo:
国家自然科学基金项目（51174082）；国家安全生产监督管理总局项目（henan-014-2013AQ）；河南省高等学校青年骨干教师资助项目（2013-984-194）
更新日期/Last Update: 2016-06-30