摘要：At present, the country's coal industry pays special attention to the open-pit mining, because of its higher efficiency and profitability. According to various surveys, currently the share of open-pit mining is 50 - 65%, and it will increase to 80 - 85% in the future. The development of an open-pit mining is accompanied by production scale increase, open pits depth increases and complexity of mining conditions of main technological equipment operation increases. With the increase of open pits depth, technological road transport becomes the most problematic issue in mining, since open-pit depth enlargement increases the distance of transportation and roads longitudinal slopes and these factors reduce the efficiency of excavator-automobile complexes.
