Experimental Investigation of the Mine Surface Moisture Influence on the Particulate Wind-Blown Emissions

Watering is the main measure to restrain wind-blown particulate emissions and sound spay parameters heavily rely on the quantitative understand of the effect of mine surface moisture on the wind-blown particulate emissions. The tunnel experiment was carried out in the paper, to investigate the threshold friction velocity of each diameter particulate on the base of the explicit definition the method of controlling moisture ratio and criterion of judging particulate movement. Then, the comparison between the mine particulate and sand threshold friction velocity was made, along with the establishment the modified formula for the moisture effect. Furthermore, the wind-blown particulate emissions with different moisture ratio were also experimented. Those results showed the particulate emissions reduced substantially when adding moisture onto the particulate surface and optimal spraying moisture ratio against the wind-blown particulate pollution was put forward eventually.