Introduces when fully-mechanized mining face crossing faultage in Tunlan coal mine,adopts a kind of new technique of preacting to dig rock drivage along the faultage and abtains the better results.

 
  • 介绍了屯兰矿在综采工作面过断层时,采用一种沿断层提前掘岩巷的新工艺,取得了良好的效果。
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