Due to the unique advantages in coal mining, the back fill technology with high water material for rib in used gateway is getting more and more special attraction from the coal mining industry.

 
  • 高水材料巷旁充填沿空留巷技術(shù)由于其在采煤生產(chǎn)中的獨特優(yōu)點(diǎn)而愈來(lái)愈受到采礦界的高度重視,并逐步得到推廣應用。
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