Protective device for mine drilling construction

Abstract

The invention discloses a protective device for mine drilling construction, which can dispose gas and coal dust and prevent fire during drilling, the device comprises a dust removing box the inside of which is used for holding water, the dust removing box is provided with a water inlet, the top of the dust removing box is provided with a gas outlet which is communicated with the inside of the box and is used for connecting with a gas drainage device, the bottom of the dust removing box is provided with a slag hole which is communicated with the inside of the box, the dust removing box is provided with a water and gas inlet which is communicated with the inside of the box and is used for receiving gas exhausted from a drainage casing in the drilling construction, and the water and gas inlet is arranged near the bottom of the dust removing box or is connected with a water inlet pipe, the tail end of which is close to the bottom of the dust removing box. When being matched with the gas drainage device, the protective device can pump most gas in the drilling construction process, and the gas can be recycled, thus not causing over-limited gas in roadway air current and enhancing the construction efficiency, and as the coal dust sinks into water and deposit, the coal dust is discharged from the slag hole, thus reducing environmental pollution and protecting the health of constructors.

Description

technical field [0001] The invention is used for dust removal, dust gas separation, fire information monitoring, and gas overrun prevention and control in mine drilling construction. Background technique [0002] During the drilling construction of mines, especially in the outburst coal seams, a large amount of gas will be released in the drilling holes, which will cause the wind flow gas and coal dust in the tunnel to exceed the limit, especially when multiple drilling rigs are constructing in the same tunnel. so it is. If the wind flow gas in the roadway exceeds the limit, the drilling work will be stopped, affecting the drilling efficiency, and more seriously, it will cause gas and coal dust accidents. The solution is to drain the gas while drilling, so there is a drainage casing around the drill pipe, and the compressed air introduced from the center of the drill pipe is used to blow dust at the bottom of the hole, so that the gas, coal / rock dust generated during drilli...

AI Technical Summary

Problems solved by technology

If the wind flow and gas in the roadway exceed the limit, the drilling work will be stopped, affecting the drilling efficiency, and more seriously, it will cause gas and coal dust accidents

The solution is to drain the gas while drilling, so there is a drainage casing around the drill pipe, and the compressed air introduced from the center of the drill pipe is used to blow dust at the bottom of the hole, so that the gas, coal / rock dust generated during drilling It is discharged along the gap between the drill pipe and the extraction casing, because it will cause air pollution because it is discharged directly through the air channel of the gas extraction device. Discharge through the gas extraction device, but the spray nozzle is easy to block, the dust removal effect is not ideal, and it will also cause the roof and floor to expand for soft rock formations. Excessive sprayed water will damage the working environment and wet workers' clothes

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