Study on the characteristics of coal and gas outburst hazard under the influence of high formation temperature in deep mines

Dingding Yang, Kai Peng, Yu Zheng, Yujia Chen, Juan Zheng, Man Wang and Si Chen

Energy, 2023, vol. 268, issue C

Abstract: Coal and gas outburst is a type of disaster whose hazard intensifies increase with the formation temperature. In this study, the impact of temperature (10–50 °C) on gas “energy-mass” characteristics was investigated, and the indexes for outburst hazard prediction were improved. Results shown that, temperature has varying influences on gas release parameters, and the influence laws are obviously different under the conditions of the same pressure and the same gas content. Taken the initial expansion energy of released gas (IEERG) as the criterion of outburst hazard, under the same gas content, IEERG changes exponentially with temperature (R2 = 0.9924); under the same gas pressure, IEERG changes as a power function with temperature (R2 = 0.7). The variation coefficients of the influence of temperature change on IEERG under the same gas content and the same pressure are 0.1612 and 0.01489 respectively, indicating the gas content index is more sensitive to temperature. This study also proposed a method to re-evaluate the critical value of the prediction index of coal seam outburst hazard in deep high-temperature mines. This method is expected to provide a solution for the safe mining of deep coal resources.

Keywords: Deep mine; High formation temperature; Coal and gas outburst; Characteristics of adsorption and desorption (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223000397
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:268:y:2023:i:c:s0360544223000397

DOI: 10.1016/j.energy.2023.126645

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().