无底柱分段崩落法开采缓倾斜矿体底盘切岩研究  

RESEARCH ON DRAWING LYING SIDE OREBODY IN FLAT DIPPING DEPOSIT MINING WITH SUBLEVEL CAVING METHOD

作　　者：高谦[1] 任天贵[1] 

机构地区：[1]北京科技大学

出　　处：《中国矿业》1992年第3X期21-24,共4页China Mining Magazine

摘　　要：基于放出体形状,本文首次提出双椭球体放出体理论,并推导了切岩回采缓倾斜矿体下盘三角带矿体放出矿岩量的理论计算公式,并以回贫差为目标函数,确定每次放矿的最优步距。基于不亏本原则,确定回采下盘三角矿体的最合理切岩高度和后退距离。Considering the actual shape of ore-drawing volume, this research first puts forward a theory of two-ellipsoid ore-drawing bulk. Based on the theory, the formulas for calculating rock and ore tonnage from cutting rock to extract lying wall triangular ore pillar using sublevel caving method have been deduced. Taking the difference between recovery ratio and dilution ratio as an objective function, the optimum distances between two steps are determined. Then, based on the principle of not losing money in mining, the optimal cutting rock height and stoping distance for extracting lying side triangular ore pillar are optimized.

关 键 词：无底柱 分段崩落法 矿体 底板 切岩 

分 类 号：TD853.362[矿业工程—金属矿开采]