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中文摘要: 根据矿山地质地形条件、矿体赋存状态、矿山现有矿山设施，确定大西沟超贫磁铁矿开采方式为露天开采。通过矿山边坡稳定性计算和极限平衡分析初步确定边坡角，采用浮动圆锥法确定最终开采境界。南采场封闭圈标高550 m，北采场封闭圈标高670 m，最终边坡角为48°～50°，平均剥采比为1.15，技术经济效果良好。该设计流程在当前矿山设计中具有一定的借鉴意义。
Abstract:Open-pit mining is chosen in Daxigou ultra-low-grade magnetite mine according to mine geological and topographical conditions, ore body occurrence state and existing mines mining facilities, the slope angle is preliminarily determined based on the stability calculation and limit equilibrium analysis of the mine slope. The final mining boundary is determined by the floating cone method. The height of the closed loop is 550 m in southern mining area, and 670 m in the north. The angle of the final slope and the average stripping ratio are designed as 48~50 degrees and 1.15 respectively with regard to technical and economic factor. This design flow can serve as a reference for the current mine design.
keywords: ultra-low-grade magnetite mine mining limit limit equilibrium method floating cone method design flow
文章编号： 中图分类号： 文献标志码：
基金项目:
| Author Name | Affiliation |
| LU Lisong | (Poly Mining Co., Ltd ., Beijing 100010, China) |
引用文本：
卢立松.大西沟超贫磁铁矿开采境界设计流程[J].有色金属（矿山部分）,2017,69(1):14-18.
LU Lisong.Design flow of mining limit for Daxigou ultra-low-grade Magnetite Mine[J].NONFERROUS METALS(Mining Section),2017,69(1):14-18.
卢立松.大西沟超贫磁铁矿开采境界设计流程[J].有色金属（矿山部分）,2017,69(1):14-18.
LU Lisong.Design flow of mining limit for Daxigou ultra-low-grade Magnetite Mine[J].NONFERROUS METALS(Mining Section),2017,69(1):14-18.
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