Abstract:

According to sub-level caving mining conditions of 1109 thick seam face in Xi Chuan coal mine, working hours of master operation of sub-level caving mining face were measured, the study drew the coordination of master operation and it impact on production. The results showed that: hydraulic support frame shift and coordination of shearer cutting is the major technical reasons that influenced on face production; Safety and high effective production of fully mechanized top coal caving working face depends on hydraulic support frame shift ahead bracket started caving in the distance. The results provides the basis for the safety and high effective production of 1109 working face and has an important practical significance on safety and high effective production of fully mechanized top coal caving working face.

Key words: Sub-level caving mining of thick seam, Coal mining technology, Coordination