The method to replace high-grade double-unit conventional face by backed double-unitfully-mechanized face on 76106 and 76108 face in Du'erping mine is introduced.
介绍了杜儿坪矿南一中组76106、76108工作面原设计为高档对拉现改为综采背拉开采的方法。
The method to replace high-grade double-unit conventional face by backed double-unitfully-mechanized face on 76106 and 76108 face in Du'erping mine is introduced.
介绍了杜儿坪矿南一中组76106、76108工作面原设计为高档对拉现改为综采背拉开采的方法。
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