Stability control of the head faces top-coal is one of the key techniques of realizing high production and high efficiency to coal mining in fully mechanized top-coal caving face.
大倾角松软煤层综放面实现高产高效的关键之一是端面顶煤稳定性控制。
The homemade shearer is a main implement equipment of mine of high yield and efficiency in working face of production coal.
采煤机是综采工作面生产原煤和实现高产高效矿井的主要设备。
The practices prove that the presented technology can assure the safety and high production efficiency of the coal face.
实践证明，这套技术安全、可靠、有效，能够保证在工作面进行高效生产。
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