Abstract: The hoisting system of the main well of Zhangzhuang iron mine adopts multirope friction wheel hoist and 19 m3 bottom discharge double skip hoisting mode,with the designed maximum annual hoisting capacity of 6.4 million tons for a single well.Since the heavy load test of zhangzhuang mine production system in 2015,and the increasing of production,higher requirements have been put forward for the lifting capacity of the main well lifting system.In order to the maximum the main shaft can improve performance,reduce the working factor of main shaft,improve operational efficiency,combined with the current production demand,through the study of many sided,eventually improve the system by optimizing operation curve and the best optimization purpose,have laid a solid foundation for zhangzhuang iron ore stable production,at the same time study and process for large underground mine main shaft hoisting optimization has certain reference significance.

Key words: mainwell hoisting,operations curve,optimization