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崩落围岩覆盖下放矿的崩落采矿法,包括有底柱崩落采矿法和无底柱分段崩落采矿法,近十几年在国内应用日益广泛。正确选择采矿法结构参数之后,使用这类采矿法的经济效果与合理决定矿石的回收和贫化指标有密切关系。如果回收和贫化指标决定得不合理,放矿不足或放矿过量,都得不到应有的经济效果。崩落围岩覆盖下放矿时,矿石的回收和贫化指标是密切相关的。在一定崩落工业矿量下,
Caving mining method covering caving and caving of caving rock, including the method of caving mining with bottom caving and pillarless caving mining, has been widely used domestically for more than ten years. The correct choice of mining structure parameters, the economic effects of the use of such mining method and the reasonable decision of ore recovery and depletion indicators are closely related. If the indicators for recovery and depletion are not properly determined, there will be no economic result due to inadequate ore drawing or excessive ore drawing. The ore recovery and depletion indicators are closely related when the caving rock is covered and drained. In a certain amount of underground coal mines,