Drilling and anti-permeability integrated device in tectonic coal development area

Abstract

The invention discloses a drilling and reflection reducing integrated device for a tectonic coal development area. The device comprises a drill rod, the rear end of which is connected with a drilling machine; the front end of the drill rod is provided with a drill bit; air bags are wrapped at the outer ring of the rod body of the drill rod at intervals; the rod body of the drill rod between the two adjacent air bags is provided with gas fracturing holes; the air bags and the gas fracturing holes are connected with an air pump through an air bag pipeline and an air pressure pipeline respectively; the air pump is connected with an air tank; a cutting blade encircling the rod body of the drill rod is connected between the rear end of the drill bit and the drill rod; the cutting blade is obliquely arranged, and the tip of the cutting blade is backward; and the cutting blade and the drill bit form a bidirectional drill bit, the drilling direction of which is the front and rear direction. Through the drilling and reflection reducing integrated device for the tectonic coal development area for solving the problems that the drilled holes easily collapse to bury a drill, the reinforcing effect is not ideal and the extraction is difficult and the like during drilling in the tectonic coal development area, the problem of difficulty in forming holes in the tectonic coal is solved, the airpermeability of the coal is improved, the gas drainage efficiency can be improved, outburst of coal and gas is effectively reduced, and safe and efficient production of the coal can be improved.

Description

technical field [0001] The invention relates to the field of gas control, in particular to an integrated device for drilling and anti-permeability in structural coal development areas. Background technique [0002] As the demand for energy increases, the intensity and depth of coal mining continue to increase, and the possibility of coal and gas outburst increases greatly. Coal and gas outbursts have made coal miners "turn pale" because of their great harm and destructiveness. Coal and gas outbursts have seriously restricted the safe production of coal mines and the safety of miners' lives. Therefore, regional and local outburst elimination for mines with high gas content or outburst mines is an important task in these coal mines. [0003] In coal mines, drilling holes in coal seams or rock formations and pre-pumping the gas is an important means for regional and local outburst elimination. However, in areas where tectonic coal develops, it is easy to form stress concentra...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method to solve the problems of easy hole collapse, buried drilling, unsatisfactory strengthening effect and difficult drainage when drilling in the structural coal development area. Drilling and anti-permeability integrated device in tectonic coal development area that can improve gas drainage efficiency, effectively reduce coal and gas outburst, and improve safe and efficient coal production

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