Vent burst doors as an effective method of suppressing the dangers of gas explosions

This paper investigated the effectiveness of a vent burst door in isolating shock waves gas explosions coal mines and to reveal mechanisms explosion overpressure. A 17.5 m × φ 0.63 columnar test duct with similar shape roadways was designed. Explosion overpressure propagation characteristics effects methane concentration at different locations along without were experimentally investigated. The results demonstrate that plays significant role sealing area propagation. properly designed is promising technique for suppressing multiple continuous poised have positive impact on improving safety China all over world.