Gas-water-slag separating buffer type gas spraying orifice preventive device

Abstract

The invention relates to a gas-water-slag separating buffer type gas spraying orifice preventive device which comprises a gas and coal dust collector, a gas exhausting and mining gas-water-slag separator and a buffer type gas drainage device, wherein the gas and coal dust collector is used for collecting gas and coal dust sprayed out of a drill hole as well as a water and gas mixture which is obtained by thorough mixing of the gas and dust through water; the gas exhausting and mining gas-water-slag separator is used for separating a gas-water-slag mixture into water, gas and coal dust, and an automatic water overflow tank performs automatic water draining and gas sealing functions; and according to the buffer type gas drainage device, during drilling, gas is sprayed abundantly, a gas collection case for collecting the gas cannot satisfy timely drainage, and then a framework fan drum performs a gas buffering and storing function temporarily. With the adoption of the device, gas and coal dust are prevented from being sprayed out from the drill hole during drilling, entering a tunnel and causing transfinite gas; gas, water and slag are separated effectively, when the gas is sprayed abundantly, the framework fan drum performs a gas buffering and storing function temporarily, and complete drainage of the sprayed gas is facilitated. Therefore, personal safety of a drilling constructer is guaranteed, orifice spraying during drilling and a gas spraying accident are eradicated, and the safety production efficiency of a coal mine is improved.

Description

technical field [0001] The invention belongs to the technical field of coal mine mining, and in particular relates to a gas-water slag separation buffer type anti-gas injection hole device. [0002] Especially when drilling outburst coal seams, the discharged water, drilling slag and gas are effectively separated, and a large amount of gas is ejected, which can also play a role [0003] Buffer storage and effective drainage can effectively prevent the potential safety hazard of gas overrun caused by spray holes or drill holes. Background technique [0004] Mine gas accidents are one of the major underground disasters. Gas accidents are characterized by suddenness and destructiveness. Once they occur, they will cause casualties and property losses. Therefore, gas control is the primary task of the current coal mine safety work, and this problem needs to be solved urgently. With the increase of mining depth, the gas content of coal seam increases gradually, and the gas press...

AI Technical Summary

Problems solved by technology

The fundamental way to control gas in outburst coal seams is gas drainage. In order to obtain a better drainage effect, advanced drilling technology is required first. When it is discharged into the roadway, the gas and water slag separation anti-gas spray hole device must be installed to realize the balance principle of "drilling while pumping". Aiming at these potential safety hazards, domestic and foreign researchers and field workers have conducted in-depth research and achieved Some gratifying achievements, but the traditional blowout preventer often cannot be pumped in time due to a large amount of gas ejection, and there is no special treatment equipment for effective separation of gas and water slag, so gas injection holes and gas water slag occur during the drilling process It will still be released in the roadway, causing serious safety hazards such as gas exceeding the limit, sedimentation and accumulation of the mixture of drilling slag and water

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