Dust removal method for heading face of mine

Abstract

The invention discloses a dust removal method for a heading face of a mine. The dust removal method comprises the following steps: S1, two conical wind collecting plates are symmetrically arranged onthe left side and the right side of the front part of a main shaft of a heading machine, a wind outlet frame is fixed to the outer wall of each conical wind collecting plate in a connected mode, nozzles are arranged on the peripheries of the wind outlet frames, and pressure detecting devices are arranged at outlets of the nozzles; S2, a pressure fan is started, pressures of the outlets of the nozzles are detected, the wind outlet volume of the pressure fan is adjusted, and a boundary windbreak is formed; S3, a negative-pressure dust removal fan is started, the pressures of the outlets of the nozzles are detected again, the wind outlet volume of the pressure fan and the wind pumping volume of the negative-pressure dust removal fan are adjusted, and a boundary windbreak is formed; S4, the heading machine is started for heading operation; and S5, after the completion of the heading operation, the pressure fan and the negative-pressure dust removal fan are stopped till wind pumped out by the negative-pressure dust removal fan is clean. The effective areas of dust suction inlets are increased, the uniformity of the dust suction inlets is improved, and a dust-containing air flow is guided and sucked out to improve the dust removal effect; and mine dust raising and overflowing are effectively lowered through the windbreaks with uniform wind pressures.

Description

technical field [0001] The invention relates to the field of mine equipment, in particular to a method for removing dust from a mine excavation face. Background technique [0002] When excavating the underground roadway of the mine, the amount of mineral dust generated by the upper and lower cutting of the integrated machine for digging and bolting is relatively large, which will cause the workers who have been exposed to the mineral dust for a long time to suffer from pneumoconiosis. [0003] Due to the limited suction volume of the negative pressure dust removal fan of the existing bolter digging machine, it can only cover a local area, and cannot suck out all the dust-laden airflow head-on, and the dust reduction efficiency is low; in order to prevent part of the dust-laden airflow from overflowing, the existing technology also An air curtain is installed for sealing, but the wind flow of the air curtain is likely to generate dust and cause pollution, and the wind pressur...

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Problems solved by technology

[0003] Due to the limited suction volume of the negative pressure dust removal fan of the existing bolter digging machine, it can only cover a local area, and cannot suck out all the dust-laden airflow head-on, and the dust reduction efficiency is low; in order to prevent part of the dust-laden airflow from overflowing, the existing technology also An air curtain is installed for sealing, but the wind flow of the air curtain is likely to generate dust and cause pollution, and the wind pressure of the air curtain on the section of the roadway is uneven, the sealing effect is poor, and the mine dust is prone to overflow

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