The geological conditions of Jiaojia Gold Mine are introduced, the types of engineering rock mass are classified and the methods of stopesupport are evaluated.
介绍了焦家金矿床的赋存地质条件，划分了工程岩体类型，介绍评价了矿山近年来应用的支护方法。
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In open stopes the ground above the stope will support its own weight. So the stope is shaped like a series of rooms divided by walls or supported by pillars of ore.