控顶切底房柱采矿法  

Mining Ways of Controling the Roof,Cutting the Bottom and Making Room-and-Pillar

作　　者：胡寺华 

机构地区：[1]云锡松树脚锡矿,个旧661400

出　　处：《昆明冶金高等专科学校学报》1999年第2期43-48,53,共7页Journal of Kunming Metallurgy College

摘　　要：控顶切底房柱采矿法采用浅孔切顶、切底、上向平行孔回采中层矿石,改进切顶房柱法的部分工艺,省去下盘脉外底部结构,回采作业在中层矿石“悬臂梁”的保护下进行,适合于矿石稳固但下盘围岩松散破碎的缓倾斜矿体的开采.The mining ways of controling the roof, cutting the bottom and making room-and-pillar are used as follows: cutting the roof in shallow holes, cutting the bottom and mining the middle layer of ore by making parallel holes upward from the bottom. The paper gives the improvement of techniques for cutting the roof and mining room-and-pillar. It suggests giving up outside structure of footwall and backstoping the middle layer of ore under the protection of over hanging ore beam. This method is suitable for mining the ore body which is firm and gently inclined but whose wall rocks are loose and broken at the bottom.

关 键 词：控顶切底房柱采矿法 回采作业 缓倾斜矿体 平行孔 悬臂梁 

分 类 号：TD853.3[矿业工程—金属矿开采]