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由本院和凡口铅锌矿组成的试验研究组,经过两年多的充分准备,于1982年初正式在凡口矿狮岭区-80米中段3～4间柱开始了VCR法的回采试验,采场的全部崩矿爆破工作已于1983年4月8日结束,目前采场的大量放矿也接近尾声,试验工作即将圆满完成。凡口矿用VCR法回采矿柱的初步尝试已取得了显著效果,采场日矿石产量超过600吨,回采成本低,且作业安全。
The pilot study group consisting of the hospital and the Fankou lead-zinc mine, after more than two years of full preparation, formally started the VCR recovery test at the beginning of 1982 at 3 to 4 columns in the mid-80-meter section of Shiling District, Fankou Mine , All the mine blasting work in the stope ended on April 8, 1983 and the current large-scale draw-off of stopes is also coming to a close. The pilot work is about to be completed successfully. At Voukou Mine, the initial attempt to recover the ore column by VCR has achieved remarkable results. The daily output of ore in the stope is over 600 tons, the cost of mining is low and the operation is safe.