STATE OF WITHDRAWAL OF FACE EQUIPMENT WORKS IN JSC SUEK-KUZBASS MINES
The mines of JSC SUEK-Kuzbass use a longwall mining system, which is characterized by high productivity. The lack of effectiveness of this development system is due to the need for installation and withdrawal of longwall face equipment. The withdrawal of face equipment is often associated with difficulties leading to an unexpected increase in the time of this process; this entails a decrease in the economic efficiency of the mine. Exceeding the standard time of withdrawal offace equipment was more than 900 days in the period from 2011 to 2017. Statistical analysis did not reveal a relationship between time of withdrawal of face equipment and the length of the lava in the considered range from 230 to 300 m.