The fully mechanized miningrate exceeds 80% in large state-owned mines.
国有重点煤矿采煤机械化程度超过80%。
2
The steep inclined seam is a difficult mining seam with a poor safety condition, a poor support stability, a lower mechanization and lower miningrate.
急倾斜煤层属难采煤层，具有安全状况差、支架稳定性差、机械化程度低、回采效率低等问题。
3
With the similar simulation test, a simulation study on the miningrate of a coal mining with the top coal weaken in different degree and under the high cutting mining condition was conducted.