综采工作面喷雾降尘中相似准则数的探讨

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

根据气固两相流动的运动方程、尘粒的扩散方程和喷雾除尘的特性, 导出了综采工作面喷雾降尘中的相似准则数, 探讨了相似准则数在模型试验中的具体应用方法, 确定了综采工作面喷雾降尘在模型试验中需要满足的相似准则数, 并通过模型试验验证了相似准则数的准确性.

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.