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卢氏县夜长坪钼矿采用浅孔留矿法开采,制约了矿山的发展。为满足扩大生产规模的需要,对该矿应用自然崩落法进行了研究。基于前期研究成果和该矿区的岩体条件,采用数值模拟方法,研究了持续崩落初始拉底面积。研究结果是,原生钼矿的适宜初始拉底面积为2800 m2,氧化钼矿的适宜初始拉底面积为800 m2。
The night long Ping molybdenum mine in Lushi County uses the shallow hole retention mining method to restrict the development of the mine. In order to meet the need of expanding the scale of production, a study was made on the application of natural caving method to the mine. Based on the previous research results and the rock mass conditions of this mining area, the numerical simulation method was used to study the initial pull-down area of continuous caving. The result of the study is that the suitable initial pull-out area of primary molybdenum ore is 2800 m2 and that of molybdenite ore is 800 m2.