Coal mine fully-mechanized excavation face short-distance comprehensive dedusting method
A working face, short-distance technology, applied in the fields of dust prevention, mining equipment, earth-moving drilling, etc., can solve the problems of mine safety production threats, harsh working environment of employees, affecting employees' physical and mental health, etc., to ensure safe production and occupational safety. Effects on health, inhibition of backward escape, risk reduction and incidence of pneumoconiosis
Active Publication Date: 2014-04-23
XINWEN MINING GROUP
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[0002] Currently in coal mine 7m 2 The MR340x high-power fully-mechanized excavator was used for excavation in the above-mentioned large-section roadway. During the operation of this fully-mechanized excavator, the working face produced a large amount of dust, and the dust concentration was 165mg / m 3 , the poor working environment of the workers seriously affects the physical and mental health of the workers and poses a great threat to the safe production of the mine
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[0019] like figure 2 The short-distance comprehensive dust removal method for the fully mechanized excavation face of the coal mine shown, the steps are as follows:
[0020] Step 1, arrange the upper wet-type vibrating wire dedusting fan 19 within 20 meters from the fully mechanized excavation working face. The tail 16 of the second conveyor belt moves together along the belt-mounted track; the wet vibrating wire dust removal fan 19 is linked with the fully mechanized excavator 11; the air volume of the wet vibrating wire dust removal fan 19 is required to be greater than 200m 3 / min, the air suction port 12 of the wet-type vibrating wire dust removal fan 19 is designed as a bell mouth type air suction port, and the air suction port 12 is arranged between the cutting part of the comprehensive excavator and the loading machine 13 of the fully mechanized excavator, and is not far from the working surface. Greater than 3 meters, the wet vibrating wire dust removal fan 19 is con...
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The invention discloses a coal mine fully-mechanized excavation face short-distance comprehensive dedusting method. A dedusting fan is arranged on the fully-mechanized excavation face, and an air draft port of the dedusting fan is a horn mouth type air draft port. A multi-step wall-adhering air duct connected onto a forced draught fan air duct is arranged at the position within a 20meter distance from the fully-mechanized excavation face. One to two dust collecting nets covering the full face are arranged at the position of mobile belt conveyer tail of a fully-mechanized excavation machine, and automatic flushing water curtains are arranged on the dust collecting nets. A bearing trolley of the dedusting fan is connected with the mobile belt conveyer tail end of the fully-mechanized excavation machine. The dedusting fan is in linkage with the fully-mechanized excavation machine. Air pressures of three hard air duct sections are identical by adjusting distances between three hard air duct sections and a cambered surface air blocking round plate, accordingly two sides of the face backward form three directional air walls, and air flows carried with dust is completely flow into the dedusting fan. By adopting the coal mine fully-mechanized excavation face short-distance comprehensive dedusting method, the dust concentration of an operation place is reduced, the coal-dust explosion danger and dust phthisis morbidity are reduced, and safety production of a coal mine is ensured.
Description
technical field [0001] The invention relates to the field of coal mine ventilation, in particular to a ventilation system for fully mechanized excavation working faces. Background technique [0002] Currently in coal mine 7m 2 The MR340x high-power fully-mechanized excavator was used for excavation in the above-mentioned large-section roadway. During the operation of this fully-mechanized excavator, the working face produced a large amount of dust, and the dust concentration was 165mg / m 3 , The poor working environment of the workers seriously affects the physical and mental health of the workers and poses a great threat to the safe production of the mine. Contents of the invention [0003] In order to effectively reduce the flour dust concentration of fully mechanized excavation in coal mines and control dust flying and diffusion, the invention proposes a short-distance comprehensive dust removal method. [0004] In order to achieve the above purpose, the technical solu...
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IPC IPC(8): E21F5/04
Inventor 秦文露张加国李心秋曹务学
Owner XINWEN MINING GROUP
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