Vent burst doors as an effective method of suppressing the dangers of gas explosions
Source abstract
Abstract
This paper investigated the effectiveness of a vent burst door in isolating the shock waves of gas explosions in coal mines and to reveal the mechanisms of gas explosion overpressure. A 17.5 m × φ 0.63 m columnar explosion test duct with a similar shape to the roadways in coal mines was designed. Explosion overpressure propagation characteristics and the effects of methane concentration at different locations along the duct with and without a vent burst door were experimentally investigated. The results demonstrate that the vent burst door plays a significant role in sealing the explosion area and isolating the explosion propagation. A properly designed vent burst door is a promising technique for suppressing and isolating multiple and continuous gas explosions and is poised to have a significant positive impact on improving the safety of coal mines in China and all over the world.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Combustion and Detonation Processes · Risk and Safety Analysis · Fire dynamics and safety research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Safety Science and Engineering, Liaoning Technical University 1 , Fuxin 123000, China
Key Laboratory of Mine Thermodynamic Disaster and Control of Ministry of Education 2 , Huludao 125105, China
School of Safety Engineering, North China Institute of Science and Technology 3 , Beijing 10160, China
Institute of Mechanics and Engineering, Liaoning Technical University 4 , Fuxin 123000, China
Funding
National Key Research and Development Program of China · Youth Project of Lining Provincial Education Department
References (23)
Show source-provided references
1. Effect of pristine palygorskite powders on explosion characteristics of methane-air premixed gas10.3390/en11102496 ↗
2. Propagation of gas explosions in roadways with different cross-sectional shapes10.1080/15567036.2019.1629551 ↗
3. Fatal gas explosion accidents on Chinese coal mines and the characteristics of unsafe behaviors: 2000–201410.1016/j.ssci.2016.09.018 ↗
4. Wave prefracturing of solid rocks under blasting10.1134/s1062739116061613 ↗
5. The roles of foam ceramics in suppression of gas explosion overpressure and quenching of flame propagation10.1016/j.jhazmat.2011.05.083 ↗
6. Brief review on passive and active methods for explosion and detonation suppression in tubes and galleries10.1016/j.jlp.2017.07.008 ↗
7. Study on the characteristics of gas explosion affected by induction charged water mist in confined space10.1016/j.jlp.2015.12.027 ↗
8. Active suppression of premixed methane/air explosion propagation by non-premixed suppressant with nitrogen and ABC powder in a semi-confined duct10.1016/j.jngse.2016.01.004 ↗
9. Prevention and suppression of explosions in gas-air and dust-air mixtures using powder aerosol-inhibitor10.1016/j.jlp.2006.05.004 ↗
10. Suppressions of gasoline-air mixture explosion by non-premixed nitrogen in a closed tunnel10.1016/j.jlp.2014.07.012 ↗
11. Suppression of flame propagation in a long duct by inertia isolation with inert gases10.1016/j.jlp.2019.03.002 ↗
12. Dust explosions-cases, causes, consequences, and control10.1016/j.jhazmat.2006.11.007 ↗
13. Influence of obstacle disturbance in a duct on explosion characteristics of coal gas10.1007/s11433-009-0270-3 ↗
14. Effects of gas concentration and venting pressure on overpressure transients during vented explosion of methane–air mixtures10.1016/j.fuel.2016.01.084 ↗
15. Vent burst pressure effects on vented gas explosion reduced pressure10.1016/j.jlp.2015.02.005 ↗
16. Experimental study on vented explosion overpressure of methane/air mixtures in manhole10.1016/j.jhazmat.2019.04.046 ↗
17. The effect of vent size and congestion in large-scale vented natural gas/air explosions10.1016/j.jlp.2015.04.014 ↗
18. Experimental and numerical studies on the closed and vented explosion behaviors of premixed methane-hydrogen/air mixtures10.1016/j.applthermaleng.2019.113907 ↗
19. Effect of small vent area on a small-scale methane-air explosion10.1002/prs.11945 ↗
20. Study on premixed flame dynamics of CH4/O2/CO2 mixtures10.1016/j.fuel.2019.115913 ↗
21. Effect of propagation behaviour of expanding spherical flames on the blast wave generated during unconfined gas explosions10.1016/j.fuel.2014.02.062 ↗
22. 2012
23. Evaluation of lignite combustion characteristics and gas explosion risks under different air volumes10.1080/15567036.2020.1770375 ↗