US 12,168,932 B2
Three-dimensional ventilation method and system for mining by 110 construction method in coal and gas outburst mines
Jiong Wang, Beijing (CN); Wenfei Li, Beijing (CN); Zimin Ma, Beijing (CN); Guangyuan Yu, Beijing (CN); Manchao He, Beijing (CN); Gonghua Chen, Beijing (CN); and Guoqiang Xiao, Beijing (CN)
Assigned to China University Of Mining and Technology, Beijing, Beijing (CN)
Appl. No. 17/922,066
Filed by China University Of Mining And Technology, Beijing, Beijing (CN)
PCT Filed Apr. 30, 2021, PCT No. PCT/CN2021/091459
§ 371(c)(1), (2) Date Oct. 28, 2022,
PCT Pub. No. WO2021/219130, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 202010367085.2 (CN), filed on Apr. 30, 2020.
Prior Publication US 2023/0175398 A1, Jun. 8, 2023
Int. Cl. E21F 1/00 (2006.01); E21F 7/00 (2006.01)
CPC E21F 1/006 (2013.01) [E21F 7/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A three-dimensional ventilation method for mining by 110 construction method in coal and gas outburst mines, suitable for a coal mining area, wherein a ventilation system of the coal mining area comprises an air inlet main roadway, an air return main roadway, a coal mining working face, a working face transport gate, a working face track gate, a gas drainage air inlet roadway and a gas drainage air return roadway, wherein, the three-dimensional ventilation method comprises:
constructing a first process roadway and/or a second process roadway before stopping the working face, wherein one end of the first process roadway is connected with an end of the working face track gate away from the air return main roadway, the other end of the first process roadway is connected with the gas drainage air return roadway, one end of the second process roadway is connected with an end of the working face transport gate away from the air inlet main roadway, the other end of the second process roadway is connected with the gas drainage air inlet roadway; and
forming a first roof-cutting and roadway retaining section by a part of the working face track gate located in a goaf, and/or forming a second roof-cutting and roadway retaining section by a part of the working face transport gate located in the goaf during a stopping process of the working face, so that the air inlet of the first roof-cutting and roadway retaining section enters the gas drainage air return roadway through the first process roadway to form return air, and/or the inlet air of the second roof-cutting and roadway retaining section enters the gas drainage air inlet roadway through the second process roadway to form return air.