Experimental Study on Damage and Gas Migration Characteristics of Gas-Bearing Coal with Different Pore Structures under Sorption-Sudden Unloading of Methane
Joint Authors
Wang, Gang
Guo, Yangyang
Du, Chang’ang
Sun, Lulu
Liu, Zhiyuan
Wang, Yue
Cao, Jianjun
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-12
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Coal and gas outburst is one of the most serious hazards in underground mine operations.
In this paper, we explored the damage and gas seepage characteristics of gas-bearing coal samples with different pore structures under methane sorption-sudden unloading conditions using a self-developed experimental apparatus.
The results show that (1) the deformation of coal samples can be divided into three stages, namely, pressure-increase-induced compression, sorption-induced expansion, and sudden-unloading-induced deformation or failure stage; (2) with the increase of the number of diffusion pores in the coal sample, the amount of gas sorption gradually increases and the expansion and failure of coal samples become more obvious; (3) in the experiment, the damage of coal samples is mainly along the axial direction and rarely along the radial direction; (4) the radial strain is always greater than the axial strain.
American Psychological Association (APA)
Wang, Gang& Guo, Yangyang& Du, Chang’ang& Sun, Lulu& Liu, Zhiyuan& Wang, Yue…[et al.]. 2019. Experimental Study on Damage and Gas Migration Characteristics of Gas-Bearing Coal with Different Pore Structures under Sorption-Sudden Unloading of Methane. Geofluids،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1154251
Modern Language Association (MLA)
Wang, Gang…[et al.]. Experimental Study on Damage and Gas Migration Characteristics of Gas-Bearing Coal with Different Pore Structures under Sorption-Sudden Unloading of Methane. Geofluids No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1154251
American Medical Association (AMA)
Wang, Gang& Guo, Yangyang& Du, Chang’ang& Sun, Lulu& Liu, Zhiyuan& Wang, Yue…[et al.]. Experimental Study on Damage and Gas Migration Characteristics of Gas-Bearing Coal with Different Pore Structures under Sorption-Sudden Unloading of Methane. Geofluids. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1154251
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1154251