不稳固低品位铜矿床安全高效开采技术研究  

Study on the Safe and Efficent Mining Technology of Unstable Low-grade Copper Deposit

作　　者：雷明 潘冬 

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]金属矿山安全技术国家重点实验室,湖南长沙410012

出　　处：《矿业研究与开发》2017年第10期89-92,共4页Mining Research and Development

摘　　要：某急倾斜不稳固铜矿床品位较低,目前采用分段崩落法开采。随着开采深度的下降,地表塌陷区域不断扩大,为保护地表建、构筑物安全,研究安全、高效的开采技术势在必行。对价格变动与采矿方法选择的关系进行了研究,结果表明当铜金属价格高于38249元/t时,充填法的经济效益优于崩落法开采。并利用FLAC^(3D)数值模拟、技术经济比较等方法,分析确定了崩落法开采移动范围及充填法开采对地表的影响程度,结果表明采用上向进路充填法回采,不仅能多回采136.1×10~4 t矿石,且地表沉降、水平变形等参数均小于规定的允许值。Aimed at the steep,unstable copper orebody with low-grade deposit,the sublevel caving method is adopted currently.With the increase of mining depth,the subsidence area on surface expanded inceasingly.To ensure the construction safety on the ground,it is necessary to research safe and efficient mining technologies.Analyzing the relationship between price changes and mining method selections,the results showed that when the price of copper was higher than 38249 RMB/t,the economical efficiency of filling method was better than that of caving method.The movement range caused by caving method and the influence of filling mining method on the surface were obtained and analyzed by FLAC^(3D) numerical simulation and economic and technical comparison method and so on.Consequently,the results indicated that using upward drift stoping and cemented filling method not only could get 136.1×10~4 tore more than using caving method,but also the parameters of surface subsidence and horizontal deformation mined by upward drift stoping and cemented filling method were all lower than the permissible value.

关 键 词：急倾斜 采矿方法选择 数值模拟 上向进路胶结充填法 

分 类 号：TD853.3[矿业工程—金属矿开采]