|本期目录/Table of Contents|

[1]翟盛锐.不同粒度型煤煤样瓦斯吸附-解吸变形特征实验研究[J].中国安全生产科学技术,2018,14(6):84-89.[doi:10.11731/j.issn.1673-193x.2018.06.013]
 ZHAI Shengrui.Experimental study on gas adsorptiondesorption deformation characteristics of briquette coal samples with different granularity[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(6):84-89.[doi:10.11731/j.issn.1673-193x.2018.06.013]
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不同粒度型煤煤样瓦斯吸附-解吸变形特征实验研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年6期
页码:
84-89
栏目:
职业安全卫生管理与技术
出版日期:
2018-06-30

文章信息/Info

Title:
Experimental study on gas adsorptiondesorption deformation characteristics of briquette coal samples with different granularity
文章编号:
1673-193X(2018)-06-0084-06
作者:
翟盛锐
(华北科技学院 安全工程学院,河北 燕郊 065201)
Author(s):
ZHAI Shengrui
(School of Safety Engineering, North China Institute of Science and Technology, Yanjiao Hebei 065201, China)
关键词:
瓦斯吸附吸附-解吸吸附变形解吸残余变形
Keywords:
gas absorption adsorptiondesorption adsorption deformation desorption residual deformation
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2018.06.013
文献标志码:
A
摘要:
为了掌握煤岩材料在不同吸附-解吸瓦斯条件下的变形规律,基于实验系统开展了相关研究,研究结果表明:煤岩材料在吸附瓦斯后可产生膨胀变形,发生瓦斯解吸时会产生收缩变形,这一变形量与煤岩材料的孔裂隙结构和瓦斯压力有直接关系,实验采用的0.85 mm粒度的煤样在同等瓦斯压力条件下其吸附变形量最大,变形量受瓦斯压力变化比较明显,由吸附产生的最大变形为1 118 με,实验采用的0.42 mm粒度煤样在相同瓦斯压力条件下变形量最小;煤岩瓦斯吸附产生膨胀变形,且煤岩瓦斯解吸后并不能完全恢复至初始状态,存在一定的残余变形量,数据分析得出残余变形量与瓦斯压力呈指数函数关系,并受煤岩孔隙结构和吸附特性影响。可为矿井瓦斯防治、瓦斯抽放及含瓦斯煤岩的力学性质的研究提供支撑。
Abstract:
In order to investigate the deformation laws of coal rock under different gas adsorptiondesorption conditions, the corresponding study was conducted based on an experimental system. The results showed that the coal rock would generate the expansion deformation after the gas adsorption, while generate the shrinkage deformation after the gas desorption. The amount of deformation was directly related to the pore fracture structure and gas pressure of the coal rock. The coal sample with the granularity of 0.85 mm had the maximal adsorption deformation amount under the same gas pressure, while the amount of deformation was relatively sensitive to the change of gas pressure, and the maximal deformation caused by the absorption was 1118 με. The coal sample with the granularity of 0.42 mm had the minimal deformation amount under the same gas pressure. After the gas adsorption, the coal rock generated the expansion deformation, and after the gas desorption, the coal rock could not recover to its initial state completely, with the presence of some residual deformation amount. The data analysis showed that the residual deformation amount presented an exponential function relationship with the gas pressure, and it was affected by the pore fracture structure and adsorption characteristics of the coal rock. The results can provide support to the gas prevention and control and the gas drainage in coal mines, as well as the research on the mechanical properties of gascontaining coal rock.

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备注/Memo

备注/Memo:
中央高校基本科研业务费项目(3142017084)
更新日期/Last Update: 2018-07-05