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目前,垂直深孔球形药包崩矿后退式回采(VCR法),作为矿房和矿柱回采的一种新方法,已被广泛采用。在过去十年里,这种采矿法在澳大利亚、欧洲、中美洲、加拿大和美国的许多矿山应用中获得了成功。由于这种独特的球状药包技术的应用,在矿房和矿柱回采中,消除或显著减少了天井掘进和切割掏槽工作量以及由于回填造成的贫化。该采矿方法的特点是:改善了爆破效果、提高了作业效率、无上向孔凿岩爆破以及最大限度地减少甚至消除了片邦带来的
At present, the VCR method, which is used to recover vertical deep-hole spherical kits, has been widely adopted as a new method for mining mines and pillars. This mining law has been successful in many mining applications in Australia, Europe, Central America, Canada and the United States over the past decade. Due to this unique bead-shaped package technology, the amount of work required to excavate and cut the sump and eliminate depletion due to backfilling has been eliminated or significantly reduced in the mining and pillar recovery. The mining method is characterized by improved blasting effectiveness, improved work efficiency, uphole boring and blasting and minimized or even eliminated