Dust removal method for waste rock smashing in underground coal mine chamber

Abstract

The invention discloses a dust removal method for waste rock smashing in an underground coal mine chamber. The dust removal method is suitable for dust removal and dust fall of the underground coal mine operation chamber generating a lot of dust. A smashing chamber is constructed between an air inlet way and an air return way and used for communicating the air inlet way with the air return way; an exhaust fan is arranged inside the air return way, and an adjusting door is installed on the side, connected with the air return way, of the smashing chamber; a smashing machine is then arranged inside the smashing chamber, a waste rock inlet belt and a waste rock outlet belt connected with the smashing machine are arranged on the side, connected with the air inlet way, of the smashing chamber, underground coal mine waste rock is conveyed to the smashing machine through the waste rock inlet belt, the waste rock which is smashed through the smashing machine is conveyed out of the chamber through the waste rock outlet belt, and when the waste rock is smashed in the smashing machine, air exhausting is performed through the exhaust fan, air pressure inside the air inlet way is controlled to be higher than that inside the air return way, air flows into the air return way through the smashing chamber from the air inlet way, and then dust removal is performed. In this way, air cleanness of the operation space of workers is guaranteed. According to the method, dust removal equipment does not need to be additionally arranged, design is simple, and using is safe and reliable.

Description

technical field [0001] The invention relates to a dust removal method for pulverizing gangue in an underground chamber of a coal mine, and is especially suitable for dust removal and dust reduction in an operating chamber with a large amount of dust produced underground in a coal mine. Background technique [0002] In order to reduce environmental problems such as surface subsidence caused by coal mining, the use of gangue generated during coal mining to backfill goafs to reduce surface subsidence will gradually be popularized and applied. Due to the different sizes of the gangue, it is usually necessary to crush the gangue to a certain size before backfilling the goaf. For a long time, the crushing of gangue is generally completed on the ground, which requires the gangue to be transported to the surface first, crushed and then transported to the underground for filling, thereby increasing a lot of lifting costs. In order to reduce the lifting cost, a gangue crushing chambe...

AI Technical Summary

Problems solved by technology

The crushing of gangue is an operation that produces a large amount of dust. Due to the narrow space underground in coal mines, the generated dust is difficult to capture, and a large amount of dust causes great harm to workers. Spraying, using dust removal machines, etc. Although these can reduce the amount of dust to a certain extent, the effect is still unsatisfactory

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