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Dust removal method of working face coal dust in tunneling coal cutting of roadway unit and dust removal chamber

A technology for working face and dust removal room, which is applied in the fields of dust prevention, earthwork drilling, safety devices, etc., can solve the problems of dust pollution that cannot be effectively controlled, and achieve the effect of reasonable design and dust pollution solution.

Active Publication Date: 2013-08-28
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the dust pollution in the return air lane of the roadway cannot be effectively controlled during the daily excavation operation in the coal mine, the present invention provides a dust removal method for the coal dust on the working face when the roadway unit excavates and cuts coal

Method used

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  • Dust removal method of working face coal dust in tunneling coal cutting of roadway unit and dust removal chamber
  • Dust removal method of working face coal dust in tunneling coal cutting of roadway unit and dust removal chamber

Examples

Experimental program
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Embodiment 1

[0019] Such as figure 2 Shown, a kind of dust removal method of working face coal dust in roadway unit driving and cutting coal, comprises the following steps:

[0020] a. 50-120m away from the front of the roadway excavation face, install the first dust catcher 1 covering the entire section of the roadway;

[0021] B, along the return air flow direction of the roadway, at a distance of 4-6m from the first dust-catching net 1, install the second dust-catching net 2 covering the full section of the roadway; the filter apertures of the first and second dust-catching nets 1 and 2 are 1~2mm, and there are rolling shutters that can be opened and closed for passage;

[0022] c. Install the water curtain spray system 3 in front of the first and second dust catch nets 1 and 2, respectively, at the roof of the roadway 150-300mm away from them, and the nozzles of the water curtain spray system 3 face the return air flow direction;

[0023] d. Between the first and second dust-catchin...

Embodiment 2

[0026] Such as figure 2 As shown, a dust removal room for coal dust on the working face of a roadway unit excavating and cutting coal, including a roadway, in which the first and second dust-catching nets 1 and 2 covering the entire section of the roadway with a distance of 4 to 6 m are installed, The filter apertures of the first and second dust-catching nets 1 and 2 are 1 to 2 mm, and there are roller shutters that can be opened and closed for passage; in front of the first and second dust-catching nets 1 and 2, respectively Install water curtain spraying system 3 on the roof of the roadway at a distance of 150-300mm; between the first and second dust-catching nets 1 and 2, install water curtains around the section of the roadway with a height of 1.5-2m from the bottom of the roadway Spraying system 3; the nozzles of the water curtain spraying system 3 face the return air flow direction.

[0027] During specific implementation, the distance between the first and second dus...

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Abstract

The invention relates to the coal mine ventilation and safety field, particularly to a dust removal technology of underground coal mines. A dust removal method of working face coal dust in tunneling coal cutting of a roadway unit includes that a first dust capture screen (1) which covers a whole section of a tunnel is installed at a position which is 50 to 120 m far away from a tunneling working face of the tunnel; a second dust capture screen (2) which covers the whole section of the tunnel is installed at a position which is 4 to 6 m far away from the first dust capture screen (1) along a return current direction of the tunnel; the filtering apertures of the first dust capture screen (1) and the second dust capture screen (2) are 2 mm and the first dust capture screen (1) and the second dust capture screen (2) are respectively provided with rolling shutters which are used for passing through; tunnel plates which are arranged in the front of the first dust capture screen (1) and the second dust capture screen (2) and 150 to 300 mm far away from the first dust capture screen (1) and the second dust capture screen (2) are respectively provided with water curtain spraying systems (3); and the nozzles of the water curtain spraying systems (3) are towards the return current direction. The dust removal method of the working face coal dust in tunneling coal cutting of the roadway unit has the advantages of being reasonable in design, enabling the dust reduction rate to achieve 90 % and solving the problem of dust pollution inside the tunnel in production of the underground working face.

Description

technical field [0001] The invention relates to the field of coal mine ventilation and safety, in particular to an underground coal mine dust removal technology. Background technique [0002] Coal mine dust (mainly coal dust) is one of the "five hazards" that endanger coal mine workers, seriously threatening the health of workers and seriously affecting the working environment. With the continuous improvement of the degree of mechanization of mining operations, in the daily production process of the mining face, the return air lane of the roadway is the main place of dust pollution. At present, the dust control method of the return air lane is dust removal at a distance of 30-100m from the working face. A purification water curtain (formed by a water curtain spray system) is installed behind the fan 4 to control the dust that flows out of the working surface with the wind (return air flow). However, due to the limited atomization effect of the nozzle and the incomplete seal...

Claims

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Application Information

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IPC IPC(8): E21F5/04
Inventor 牛江江王永革张育恒田书龙蔺吉胜辛宪耀董炳文曹雪芹李海涛成国清
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD