煤与瓦斯突出热动力学过程试验研究

doi:10.16265/j.cnki.issn1003-3033.2017.05.019

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (5): 105-110.doi: 10.16265/j.cnki.issn1003-3033.2017.05.019

煤与瓦斯突出热动力学过程试验研究

吴鑫^1,2,3 讲师, 李基¹ 副教授, 李国辉¹ 副教授, 聂闻³, 涂梓涵¹

1 四川师范大学工学院,四川成都 610101;
2 四川大学水利学与山区河流开发保护国家重点实验室,四川成都 610065;
3 重庆大学煤矿灾害动力学与控制国家重点实验室,重庆 400044

收稿日期:2016-12-05 修回日期:2017-02-15 出版日期:2017-05-20 发布日期:2020-10-30
作者简介:吴鑫 (1983—),男,四川遂宁人,工学博士,讲师,主要从事矿山岩石力学与灾害防治方面的教学与科研工作。E-mail:muchelwu@hotmail.com。
基金资助:
国家重点基础研究发展计划(“973”)项目(2010CB226802);国家安全监管总局2017年安全生产重特大事故防治关键技术科技项目(sichuan-0004-2017AQ);四川省安监局安全生产科技攻关项目(scaqjgjc_stp_20150011);四川师范大学校级项目(14YB01)。

Experimental study on thermodynamic process of coal and gas outburst

WU XIN^1,2,3, LI Ji¹, LI Guohui¹, NIE Wen³, TU Zihan¹

1 Institute of Technology, Sichuan Normal University, Chengdu Sichuan 610101, China;
2 State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu Sichuan 610065, China;
3 State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China

Received:2016-12-05 Revised:2017-02-15 Online:2017-05-20 Published:2020-10-30

摘要/Abstract

摘要： 为进一步加强煤与瓦斯(甲烷)突出等矿山重大灾害预测预报的工作,开展煤与瓦斯突出全过程热动力现象研究。将煤样破碎后在煤与瓦斯突出相似模拟试验台内加压成型,开展不同粒径煤样的吸附、解吸及突出试验,获取试验过程中的煤体温度变化数据。结果表明:煤与瓦斯突出过程中煤体温度随时间的演化关系近似符合自然对数函数;煤样粒径对煤体温度变化有显著影响,煤样粒径越小,在吸附解吸瓦斯时温度变化量就越大、变化速度也更迅速。通过分析煤与瓦斯突出试验结果及能量关系得出,煤的粒径很大程度上决定了瓦斯吸附能力及瓦斯内能,瓦斯内能又很大程度上决定了煤与瓦斯突出强度。

关键词: 温度, 吸附, 解吸, 煤与瓦斯突出, 热动力学

Abstract: In order to further improve forecasting of major disasters in mines such as coal and gas(methane) outburst, some quantitative studies were carried out on the thermodynamic phenomena in the whole process of coal and gas outburst. Coal samples crushed were pressed and molded in a similar simulation test bed of coal and gas outburst. Adsorption, desorption and coal and gas outburst tests of the coal samples with different particle sizes were carried out. Variation in coal temperature during the test was obtained. The results show that the evolution of coal body temperature can be described by a natural logarithm function in the process of coal and gas outburst, that the coal particle size has a significant effect on the variation in coal temperature, and the smaller the coal particle is, the greater and faster the variation in temperature will be, and that the coal particle size determines the gas adsorption capacity and the gas internal energy, and in turn, the gas internal energy determines the coal and gas outburst intensity to a great extent.

Key words: temperature, adsorption, desorption, coal and gas outburst, thermodynamics

中图分类号:

X936

吴鑫, 李基, 李国辉, 聂闻, 涂梓涵. 煤与瓦斯突出热动力学过程试验研究[J]. 中国安全科学学报, 2017, 27(5): 105-110.

WU XIN, LI Ji, LI Guohui, NIE Wen, TU Zihan. Experimental study on thermodynamic process of coal and gas outburst[J]. China Safety Science Journal, 2017, 27(5): 105-110.

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煤与瓦斯突出热动力学过程试验研究

Experimental study on thermodynamic process of coal and gas outburst

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