Methods for roadway support and measures to monitor the support stress during developments of roadways in broken veins at Dounan Manganese Mines of Yunnan province are presented.

  • 介绍了斗南锰矿对破碎矿脉内开拓巷道的支护方法及对巷道支护压力测量等的监测手段。
目录 查词历史