ABSTRACT
The main directions of technological and organizational improvement of technologies of coal mining providing concentration of coal mining are the following:
– increasing face length from 180 m up to 250 m, – increasing face mining limit from 1200 m up to 2000-3000 m (before the first major
overhaul of the mechanized sets), – increasing waste rock overcutting up to 40-50 cm, – leaving of waste rock underground, due to separation of transport systems and dry
preliminary processing with total backfilling, – maintaining continuous coal extraction, – eliminating methane hazard without additional work on degassing by using rock
overcutting and so increasing the cross-sectional sizes of faces, – streamlining the technology of coal mining with face shut offs for performance of
service works combined with roof control, – creating storage capacities (5000-7000 t) for streamlining of coal mining. All that will
allow achieving: – daily output of commodity coal of 2500-3200 t/day from one production face and
7500-10000 t/day from a mine, – good ventilation that meets the requirements of Safety Regulations, without additional
work on degassing, – 1,5-2 times increase in labour productivity in a mine, – improved working conditions of miners in production sections.
