Rapid Metal Anchor Wall Construction Method for Controlling Air Leakage in General Return Airway of Mine in Karst Area
A technology for air leakage and construction method of return airway, applied in mining equipment, earthwork drilling, installation of bolts, etc., can solve the problems of reducing the effective air volume rate of the mine, difficulty, and increasing the cost of mine ventilation and electricity consumption, so as to improve the safety of the mine. Production level, equipment and material requirements are not high, good effect and economic effect
Inactive Publication Date: 2017-12-12
四川芙蓉集团实业有限责任公司
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Problems solved by technology
[0003] 1) The effective air volume of the air point is greatly reduced, which may cause the accumulation of toxic and harmful gases such as gas in a certain area underground in the mine, and also cause adverse weather conditions in the workplace
[0004] 2) Complicate the ventilation system, affect the stability and reliability of mine ventilation, and increase the difficulty of air volume adjustment
[0005] 3) It may cause spontaneous combustion caused by residual coal in the goaf
[0006] 4) A large amount of air leakage will reduce the effective air volume rate of the mine and increase the power consumption cost of mine ventilation
Method used
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[0021] In order to further understand the content, features, and effects of the present invention, the following embodiments are exemplified, and are described in detail below with accompanying drawings.
[0022] Weixin Coal, Furong Company of Sichuan Coal Group, is located in Linbao Village, Zhendong Township, Xuyong County, Guxu Coal Field, a national high-quality anthracite coal base. It is a provincial-level state-owned key coal mine. The mining area is 2km away from the 321 National Highway and 4km from the entrance of the Naqian Expressway. The Zhendong Railway Station (under construction) of the Syrian-Dalian Railway passes through the boundary of the mining area. The transportation is very convenient. The total reserves of the mine are 33.07 million tons, and the area of 3.57 square kilometers has been delimited. At present, the delineated raw coal reserves above +850m level are 9.8 million tons, and the mineable coal seams are C19, C20, and C24. Among them, C19 and C20...
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The invention discloses a quick metal anchor wall construction method for controlling air leakage of a total mine return airway in a karst area. The quick metal anchor wall construction method comprises the steps of actually measuring air leakage data; tunneling and levelling the bottom according to the designed elevation; loading and transporting gangue to a ground gangue unloading spot; drilling a connecting hole in an anchor rod by a drill bit; manufacturing a connecting anchor rod and metal anchor wall side plates; connecting the metal anchor wall side plates with the anchor rod; connecting the adjacent side plates by flanges; erecting an operation platform; manufacturing a metal anchor wall cover plate and connecting the metal anchor wall cover plate with the anchor rod; connecting the cover plate and the side plates which are adjacent to each other by flanges; pouring bottom plate concrete; cleaning away roadway dross; and actually measuring and checking air leakage blockage data. According to the quick metal anchor wall construction method, the construction process is simple and quick; a good effect and economic benefits are achieved in controlling of air leakage in the total mine return airway in the karst area; and the method has the popularization in other roadways and mines of the same type and has the active and effective promotion effect on forming the good ventilation environment and improving the safety production level of mines.
Description
Technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to a rapid metal anchor wall construction method for controlling air leakage in a general return air tunnel of a mine in a karst area. Background technique [0002] The air leakage in the main return air tunnel of the coal mine poses a serious threat to safety production: [0003] 1) The effective air volume at the wind point is greatly reduced, which may cause the accumulation of gas and other toxic and harmful gases in a certain area of the mine, and also cause adverse weather conditions in the work site. [0004] 2) Complicate the ventilation system, affect the stability and reliability of mine ventilation, and increase the difficulty of air volume adjustment. [0005] 3) May cause spontaneous fire caused by coal remaining in the goaf. [0006] 4) A large amount of air leakage will inevitably reduce the effective air volume rate of the mine and increase the electricity ...
Claims
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IPC IPC(8): E21D20/00
CPCE21D20/00E21D20/003E21D20/021
Inventor 徐廷甫金银财李基邱邦汉袁修竹谢家鹏李国辉黄正谷张克培胡勇韩剑
Owner 四川芙蓉集团实业有限责任公司