关键词: 主成分, 铁矿山, 资源, 保障能力

Abstract: The resource support capacity of mines depends on many factors such as production capacity, ore grade and available reserve.The larger the mine production capacity is and the more the ore mined is, the stronger its support capacity to the current resource supply will be; the more the available reserve is and the longer the residual mine service life is, the more favorable its long term resource support capacity will be; and the higher the grade of its mineral resource is and the better its ore quality is, the higher its support capacity will be.A comprehensive analysis of China's open-pit mines is made by principal component method to identify the major mines having an important role in supporting China's iron ore supply.Their position in China's iron ore resource supply and their development trend are also analyzed.Finally, suggestions on the policy for improving China's iron ore resource support capacity are made.

Key words: Principal component, Iron mine, Resource, Support capacity