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。

The steep inclined seam is a difficult mining seam with a poor safety condition, a poor support stability, a lower mechanization and lower mining rate.

youdao

液压支架作为综合机械化采煤关键设备，其动态性能的好坏直接影响着整个综采工作面的可靠性及安全性。

Hydraulic support is the key equipment of the synthetically mechanized coal mining, the dynamic performance impacts on the reliability and safety of the whole mechanized working face.

youdao

液压支架是煤矿综合机械化采煤的关键设备，双伸缩立柱是液压支架的关键零部件。

Hydraulic support is the key equipment of mechanized coal mining. The double-telescopic prop is the key component of hydraulic support.

youdao