Journal
FIRE SAFETY JOURNAL
Volume 58, Issue -, Pages 142-150Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.firesaf.2013.01.004
Keywords
Mine atmosphere; Mine gas explosibility; Simulation model; Dynamic atmosphere changes
Funding
- Fundamental Research Funds for the Central Universities
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- National Natural Sciences Foundation of China [50604014, 51134023]
- NECT of Ministry of Education [NCET-08-0838]
Ask authors/readers for more resources
Methane and coal dust explosions are the most feared hazards in the coal industry worldwide. The large majority of these explosions originates from or occurs around sealed mine areas. On the other hand, nearly all coal mine explosions initially start with the ignition of combustible gases such as methane, carbon monoxide, etc. Technically speaking, the explosibility of a mine atmosphere depends on the composition of oxygen, combustibles and inert gases. However, the compositions in an inaccessible sealed mine areas change with time under the influences of inflows of combustible gases, air leakage, inert gases injected, etc. In order to improve mine safety, it is desirable to have a tool to accurately simulate the gas compositions in a sealed area and to determine its explosibility. In this paper, a mathematical model to simulate atmospheric compositions in a sealed mine volume is developed, and the original Coward explosive triangle method is expanded for determining the explosibility. Finally, a case study is used to show the applicability of the developed model and the explosibility changes over time are also plotted with the help of the expanded Coward method. In addition, the USBM explosibility diagram is used to verify the results derived by the expanded Coward method. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available