Reacher on the negative-pressure dedusting

With the fully-mechanized mining caving technique gradually promoted, fully-mechanized mining support coal vent has become the largest production of dust. The prevention and treatment measures are that spray is used to fall dust in the mouth coal. But the problem of dust pollution is not solved by this measure. The research of negative pressure dedusting mechanism is put forward. Through the research of the dust subsidence rule in the caving mouth, discovered that the key of the falling dust should be put on the small dust particles below 30um on the breathing level (which is 1.5~2 meters from the ground). According to the dust subsidence rule, the dedusting efficiency simulation research of the negative pressure dedusting device is conducted, which has provided the theory and the design basis to the negative pressure dedusting device´s design.