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西华山矿因受外部供电影响,每年只有2/3时间能开工生产,为了确保生产计划的完成,该矿加强了残矿的清理,即对已结束采矿和放矿的采场中残存的矿石,在采取可靠的安全措施的前提下,以后退式或前进式作业进行清理。“六五”计划期间,共计清理出残矿39.5万吨,占同期出矿总量的11％,占同期钨精矿产量的7.8％、并获得钼、铋、锡等附产品约20余吨。
Due to external power supply, Xihuashan Mine can only start production in about 2/3 of the year. To ensure the completion of the production plan, the mine strengthened the clean-up of residual ore, that is, the residual ore in stopes that have ended mining and ore drawing , To take reliable safety measures under the premise of back-off or forward operations to clean up. During the “6th Five-Year Plan” period, a total of 395,000 tons of residual mines were disposed of, accounting for 11% of the total amount of ore mined in the same period, accounting for 7.8% of the total output of tungsten concentrates and obtaining about 20 tons of molybdenum, bismuth and tin .