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.
出处
《中国矿业》
1992年第3X期21-24,共4页
China Mining Magazine
关键词
无底柱
分段崩落法
矿体
底板
切岩
Sublevel caving
Two-ellipsoid ore-drawing bulk theory
Cutting rock height in foot wall
Difference between recovery ratio and dilution ratio.
