Ventilation optimization method for underground multi-middle-section mining operation

• Main Authors: LYU YINGLEI, CHEN XIAODONG, FENG AN'AN, GUO XUNYING, LUAN DONGPENG, YU CHANGXIAN, HOU CHENGLU, ZHAO HONGKAI, LIU ZAITAO, XU HUAPENG
• Format: Patent
• Language: Chinese; English
• Published: 29.10.2021
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention discloses a ventilation optimization method for underground multi-middle-section mining operation. The method comprises the steps that firstly, adjusting air doors are installed at air return shafts of two-wing systems of a middle (sub) section roadway in an operation area, an air wall is constructed in an air joint on the upper portion of an air return raise of a stope, and closing of the adjustable air doors of the middle (sub) section roadway and dismantling of the air wall are controlled according to the stoping progress of the stope, so that it is ensured that dirty air and fresh air flow in the upper and middle sections are not connected in series, and the ventilation quality is improved. According to the method, dirty air series connection of a multiple-middle-section operation area can be effectively reduced, and the ventilation environment of the operation area is optimized. 本发明公开了一种井下多中段采矿作业通风优化方法。首先在作业区域的中（分）段巷两翼系统回风井处安装调节风门，在采场回风天井上部风联内施工风墙，根据采场回采进度，控制中（分）段巷可调节风门的关闭及风墙的拆除，确保污风与上中段新鲜风