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Study on Hazard Effects of Gas Explosion in Coal Laneways

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Abstract:

Methane-air explosion is one of the main accidents in coal mines. In this paper, the hazard effects of the gas explosion in a long straight coal laneway were studied by virtue of numerical simulation. Distribution characteristics of the shock wave overpressure, the flame speed and the temperature field were obtained. Along the increasing axial distance, shock wave overpressure increases in original methane-air area and decreases beyond the original methane-air area. Range of flame exceeds original methane-air area. Flame accelerates continually in original methane-air area and decelerates beyond the original methane-air area. The temperature attenuates slowly along the increasing distance in the flame area by virtue of flame front, and attenuates quickly along the increasing distance beyond the flame region. High temperature hazard involves farther area beyond original methane-air area.

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Info:

Periodical:

Advanced Materials Research (Volume 402)

Pages:

846-849

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.402.846

Citation:

Cite this paper

Online since:

November 2011

Authors:

Lei Pang, Tong Wang, Yu Shu Xie, Wei Yao, Qi Zhang

Keywords:

Flame, Gas Explosion, Hazard Effect, High-Temperature, Shock Wave

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