Abstract
The experiment of gas and coal dust explosion propagation in a single laneway was carried out in a large experimental roadway that is nearly the same with actual environment and geometry conditions. In the experiment, the time when the gas and coal dust explosion flame reaches test points has a logarithmic function relation with the test point distances. The explosion flame propagation velocity rises rapidly in the foreside of the coal dust segment and comes down after that. The length of the flame area is about 2 times that of the original coal dust accumulation area. Shock wave pressure comes down to the rock bottom in the coal dust segment, then reaches the maximum peak rapidly and comes down. The theoretical basis of the research and assemble of across or explosion is supplied by the experiment conclusion. Compared with gas explosion, the force and destruction degree of gas and coal dust explosion is much larger.
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References
Li R Z, 2007. Gas explosion inducing deposition coal dust explosion research. Master’s Thesis, Chongqing Research Institute of China Coal Research Institute.
Si R J, 2007. Gas and coal dust explosion propagation rule research in coal mine. Doctor’s Thesis, Shandong University of Science and Technology.
Wu H B, 2002. Methane flame and it inducing coal dust detonation explosion mechanism experiment research. Master’s Thesis, Anhui University of Science and Technology.
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Supported by the National Basic Research Program (973) (2005CB221506); the Open Research Fund Program of Shandong University of Science and Technology (MDPC0611)
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Si, Rj., Li, Rz., Wang, L. et al. Experiment study on the propagation laws of gas and coal dust explosion in coal mine. J Coal Sci Eng China 15, 262–266 (2009). https://doi.org/10.1007/s12404-009-0309-0
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DOI: https://doi.org/10.1007/s12404-009-0309-0