Study on Comprehensive Dust Control Technology of Coal Cutting against the Wind in Coal Ming Face with High Dust Intensity

In view of the dust hazard characteristics of coal cutting against the wind in coal mining face with high dust intensity, the 20106 fully mechanized mining face in Wangjialing Coal Mine was taken as the test object, following the dust control idea of “suppressing first, controlling later, and then lowering”, to comprehensively control the dust hazard, the technologies such as high efficiency spray dust suppression of the shearer, spray dust suppression of the shearer, and downwind floating dust control were adopted. During the rapid wetting of the coal shearer drum and the crushing of coal in the collapse area, the dust-containing airflow was led to the side of the sidewalk for efficient settlement, and finally the total dust removal efficiency of the driver and the downwind side of the shearer at 10 m reaches 98.3% and 97.6% respectively when coal cutting against the wind, it achieved a significant dust reduction effect.