Probing into similarity law of fully mechanized mining face in dust suppression by spraying

Based on the kinetic equation of gas-solid two-phase flow, the diffusion equation of dust particle, and the characteristics of dust sression by spraying, the similarity laws of dust extinguishing using sprays in fully mechanized mining face were deduced. And applicative methods in model experiments were discussed,and worked out the similarity parameters for model experiments on dust suppression by spraying in fully mechanized mining face, and proved it with model experiments.