丰山铜矿是1965年在边勘探、边设计、边施工的作法指导下开始建设起来的一座大型矿山。设计规模为日产矿石3500吨,其中南缘无底柱分段崩落法担负日产3000吨矿石的任务。自1971年简易投产至今最好年的实际生产能力仅为设计的40％左右。在看了《有色矿山》1982年第4期上刊载的《改善设汁方法提高矿山投资的经济效果》 Fengshan Copper Mine is a large-scale mine started construction in 1965 under the guidance of exploration, design and construction. The designed size is 3,500 tons of ore per day, of which the southeastern pillarless subsidence method takes on the task of producing 3,000 tons of ore per day. Since 1971 simple put into production so far the best annual actual production capacity of only about 40% of the design. Having read “Nonferrous Mines”, No. 4, 1982, “Improving the Method of Setting Juices to Improve the Economic Effect of Mining Investment”