Variation and Prediction Methods of the Explosion Characteristic Parameters of Coal Dust/Gas Mixtures

In order to investigate the change law of explosion characteristic parameters hybrid mixture coal dust and gas, then establish an effective prediction method these parameters, maximum pressure, index, lower limit gas mixtures were measured in a standard 20 L spherical system. Four different kinds selected this study they are composed with components respectively. According results, was analyzed, discussed. The results show that addition cloud can obviously increase its pressure index notably reduce minimum concentration. On increasing equivalent ratio, increases linearly quadratically, while decrease curve is nonlinear. Based on laws, methods for predicting established applicability existing demonstrated.