攀枝花矿山公司兰尖露天矿2号溜井是该矿主要生产溜井。自1972年投产以来,井壁不断坍塌,形成了一个一百余万米~3的大塌硐。它不仅影响了出矿生产,同时继续坍落的隐患严重的威胁着地面生产的安全,成为矿山公司的重大疑难。经反复调查研究,公司决定采用大爆破处理方案,即掀去“顶盖”,形成露天大漏斗,化害为利,实现长臂铲大漏斗的采矿生产。大爆破方案的实施,取决于施工过程中的 Panzhihua Mining Company Lan pointed open pit mine on the 2nd slip is the main production of the mine runway. Since it was put into operation in 1972, the wall of the well has been continuously collapsed, forming a big cave of over one million meters ~ 3. It not only affected the ore production, while the continuing slump risks seriously threaten the safety of ground production and become a major problem for mining companies. After repeated investigations and studies, the company decided to adopt a large blasting treatment scheme, that is, lift the “roof” to form a large open-air funnel, harm for the benefit of long arm shovel large funnel mining production. The implementation of the big blasting program depends on the construction process