SU1514452A1 - Method and apparatus for dedusting air flow in mine workings - Google Patents

Description

The invention relates to the mining industry. The goal is to increase the efficiency of dust removal due to accounting for the aerodynamics of the air flow. In po2

cross-sectional production create a water-air curtain using nozzles installed along the perimeter. Measure the speed of the air flow. In the cross-section of the mine, a zone is determined with a maximum speed. In this zone, a nozzle is installed, creating a central irrigation torch directed towards the air flow. At the same time, the nozzle torches installed along the perimeter of the excavation are directed at an acute angle to the walls of the excavation at the central torch. Create a total cone-shaped torch with a vertex angle of 90-110 °. 3 il. with

The invention relates to the mining industry, in particular to methods of combating the dustiness of the mine atmosphere, and can be used for dedusting ventilation flows in the mine workings and other mining and construction works, such as ^g when tunneling, etc.

The aim of the invention is to increase the efficiency of dust removal by taking into account the aerodynamics of the flow.

Figure 1 shows the General scheme of implementation of the method spylivanin air flow in the mine workings with the placement of the nozzles in the cross section of the mine workings; figure 2 - section aa in figure 1 with the image of the total torch cone-shaped; on fig.Z - section B ~ B in figure 1.

The method is as follows.

In the mine workings, along its perimeter walls 1, nozzles 2 are placed, hermetically connected through a collector 3 to a flexible pressure pipe 4. Irrigation nozzles 2 are installed with the ability to control the intensity of the irrigation torches using taps 5 "At the installation site, a water curtain is measured, for example by an anemometer, the speed of the air flow in the cross section of the excavation, find in the section the zone with the maximum speed of the air flow and in this zone establish the central nozzle 6 connected to the collector 3 by flexible por'nym pipe 7, to move it over the section of production. The nozzles 2, installed at the walls of the excavation, are directed at an acute angle to the walls of the air generation and orientation “15Ϊ4452

1514452

tied to the torch of the central nozzle

so that a single total cone-shaped torch is formed from

all nozzles in a veil with an angle at

the top 90 - 110.

The mixture of water and compressed air is fed into the flexible pressure pipe 4, through the taps 5 and the collector 3 - into the nozzles 2 and through the flexible pressure hose Yu 7 - into the nozzle 6. With the help of compressed air, a thin dispersion of the liquid takes off as it leaves the nozzles and passes through I bring in the air flow is dedusted 15

Example. The implementation of the method we consider the example of dedusting the air flow emanating from the clearing face of a coal mine. The proposed water curtain device is installed in the cross section of the ventilation drift 15–20 m from the clearing face (FIG. 1). To do this, at the place of installation of the water curtain, an anemometer measures the speed of the air flow along the section of the mine, find in the section the zone with the maximum speed of the air flow. In this zone, 30 nozzles are installed, for example, type TZ-1, and directed towards the movement of the air flow. Based on the amount of air passing through the generation, the number of nozzles 1 is determined and placed 35 across the section at the walls of the excavation, for example, one OP-1 nozzle per 100 m ³ / min, or type TZ-1 for each 500 m ^e / min passing air. The number of nozzles at a stee-40 generation should not be less than two, and the total water consumption during operation of the air curtain is not less than 0.1 l / m ^{e of} passing air. Nozzles 1 installed at the walls should be directed at an angle of ~ 45

scrap to the moving air flow and point at the torch from the central nozzle 4 so that a single total cone-shaped torch is formed from all the nozzles in the veil. The intensity (length of the torch) in the central nozzle 4 and the direction and. The intensity of the plumes from the nozzles 1, installed at the walls of the excavation, is adjusted and directed so that the single total plume has a conical shape with an optimum angle of 90110 ° directed towards the air flow.

The proposed method allows to increase the efficiency of dedusting air streams emanating from the cleaning and preparatory faces.

Claims (1)

Claim The method of dedusting the air flow in the mine workings, including the creation of a water-air curtain in the cross-section of the mine with the help of nozzles installed along the perimeter of the cross section of the mine, characterized in that, in order to increase the efficiency of dusting by taking into account the aerodynamics of the air flow, measure the speed of the air flow, determine the zone with the maximum speed in the cross-section of generation and in this zone the nozzle is installed, which creates a central irrigation torch directed towards the ground treating the air flow, with the nozzle plugs installed along the perimeter of the mine working, direct at an acute angle to the walls of the mine to the central torch and create a total cone-shaped torch with an apex angle of 90 - 110. ' ^ς ' · <* 452 Aa feT. 7777/777 //// 7 // 7/7, fig.Z