Dust isolation-dust fall method and dust isolation-dust fall system for dust produced by shearer cutting

Abstract

The invention discloses a dust isolation-dust fall method and a dust isolation-dust fall system for dust produced by shearer cutting of a fully mechanized coal mining face. A plurality of first wind and water spray nozzles are evenly arranged on a machine body of a shearer; plate trailers are respectively arranged at the front and back of the shearer; dust removal fans are respectively arranged onthe plate trailers; a plurality of second wind and water spray nozzles are evenly arranged on each dust removal fan; a transparent high strength material dust shield is arranged between a stand column of a hydraulic support and the shearer, and single water spray nozzles are respectively arranged at the upper part and lower part of the transparent high strength material dust shield; an enclosed interception space is defined by means of the transparent high strength material dust shield and the fully mechanized coal mining face; the dust removal fans, the first wind and water spray nozzles, the second wind and water spray nozzles and a high pressure micro-mist spray nozzle are used for performing dust isolation-dust fall on the fully mechanized coal mining face in a cooperative way; the invention also provides the dust isolation-dust fall method. By adopting measures of ventilating for discharging dust, spraying for falling dust, removing the dust by means of the dust removal fans andisolating the dust on the fully mechanized coal mining face, the method and the system greatly reduces the amount of the dust on the fully mechanized coal mining face and improves the severe underground environment.

Description

technical field [0001] The invention relates to the field of coal mine dust prevention and control, in particular to a dust isolation-dust reduction method and a dust isolation-dust reduction system for fully mechanized coal mining face shearer cutting dust production. Background technique [0002] In recent years, with the continuous improvement of mechanization and automation in my country's coal industry, the amount of coal dust generated in coal mining face is also increasing, and the health and safety problems caused by coal dust are particularly prominent. According to the actual measurement, when no measures are taken, the dust concentration in the fully mechanized mining face can reach 5000-8000mg / m 3 Among them, the cutting dust produced by coal mining machines accounts for about 55% of the fully mechanized mining face cutting dust, and the respirable dust accounts for more than 50% of the total dust. High concentration of dust will not only cause occupational dise...

AI Technical Summary

Problems solved by technology

High-concentration dust will not only cause occupational diseases, but also may cause dust explosion accidents, seriously affecting the safe production of mines

[0003] At present, in view of the high concentration of dust in the fully mechanized mining face of coal mines, the commonly used control measures are mainly ventilation and dust removal, spray dust reduction, dust removal fan dust removal, chemical dust suppression, etc. Under the action of wind flow, it quickly diffuses to the entire working space. Therefore, the dust removal effect of traditional dust prevention measures is relatively limited.

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