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现代大型露天矿的特点是运输线路系统复杂,铁路线很长(达300km以上)。移动线路保证露天采场中矿岩装载站和排土场上卸载站发挥正常的作用;固定线路则沟通装载站与排土场和卸载设施之间的运输联系。随着露天采场深度的增加和生产能力的提高,线路系统经常在发展和变得复杂。在此情况下,矿内铁路线长度的增加首先要依靠延长固定线路,于是,在1977～1983年期间,露天铁矿铁路线增加的总长度约为1000km,其中固定线路的比例占90％以上。在同
The characteristics of the modern large-scale open-pit mines are that the transportation route system is complex and the railway line is very long (up to over 300km). Mobile lines ensure normal operation of the rock loading station and the unloading station in the dump in the open pit; fixed lines communicate the transport links between the loading station and the dump and dumping facilities. As open pit depths increase and production capacity increases, wiring systems are often developed and become more complex. In this case, the increase of the length of the railway within the mine depends firstly on the extension of the fixed route. Thus, the total increase of the open-pit railway line from 1977 to 1983 was about 1000 km, of which the proportion of fixed lines accounted for over 90% . In the same