总回风巷

  • 【煤】main return airway
总回风巷总回风巷
  1. 寺河矿井西总回风大巷快速施工法

    Fast driving method of west main return air roadway in Shihe mine

  2. 高河矿井+450m水平总回风大巷锚杆支护技术

    Technology of Anchored Bolt Supporting for Main Return-air Roadway at + 450m Level in Gaohe Mine