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一、前言 某矿南部矿区地处长白山区、冰冻期六个月,冻土层2.1米,冬季最低气温-35℃。箕斗井每日分别从井下提升650吨矿石和120吨废石到地面5米高的翻转曲轨处,卸入矿石、废石分配车中。矿石溜进零米中段矿仓,用电车运出二坑平硐到选矿厂,废石进入地表废石矿仓,从地表运走。距箕斗井45米处有一个明竖井,提升人员和材料设备。井下为两翼对角抽出式通风系统。东、西两翼分别安装一台2By—12—16B型、70B_2—
I. Foreword A mine in southern part of the mine is located in Changbai Mountain with a freezing period of six months and a permafrost of 2.1 meters. The minimum temperature in winter is -35 ° C. Boeing wells daily upgrade from the underground 650 tons of ore and 120 tons of waste rock to the ground 5 meters high turning track, unloading ore, waste rock distribution car. Ore ore slipped into the middle of the ore mines, tramway out of two pit adit to the beneficiation plant, waste rock into the surface of waste rock mines, away from the surface. 45 meters away from the skip well there is a clear vertical shaft, lifting staff and materials and equipment. Downhole diagonal ventilation system for the two wings. East and west wings were installed a 2By-12-16B type, 70B_2-