夜长坪钼矿自然崩落法初始拉底面积的优化

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。

Optimization of Initial Undercut Area for Block Caving in Yechangping Molybdenum Mine

In Yechangping Molybdenum Mine,shallow-hole shrinkage stoping is adopted,but this mining method has already restricted the development of the mine.In order to meet the requirement of enlarging production scale,the adoption of block caving system to the mine was studied.On the basis of the results of early research and the conditions of rock mass in the mining area,the initial undercut area for continuing block caving was studied with numerical simulation.The result showed that the suitable initial undercut area for the primary molybdenum ore is 2800 square meter,for the oxidized molybdenum ore is 800 square meter.