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无底柱分段崩落法在我国的使用相当广泛,设计的年产矿石量在4000万吨以上,占黑色金属矿山地下开采设计总产量的70％,是一举足轻重的采矿方法,其技术经济效果的好坏,对我国采矿工业有相当大的影响。因此近年来,冶金工业部曾指示有关矿山、研究单位和高等院校,将改善某些矿山的无底柱分段崩落法技术经济指标,作为科研攻关项目来对待,给予
Slit-free subsidence caving method is widely used in our country. The designed annual output of ore is more than 40 million tons, accounting for 70% of the total output of underground mining in ferrous metal mine. It is a pivotal mining method, and its technical and economic effects Good or bad, have a considerable impact on China’s mining industry. In recent years, therefore, the Ministry of Metallurgical Industry has instructed relevant mines, research institutes and institutions of higher learning to improve the technical and economic indicators of subsea subsidence caving in some mines and treat them as scientific research projects,