房柱交替上升式采矿工艺时空变换力学分析

Mechanical Analysis of Space-time Transformation for Alternate Room-and-pillar Mining with Ascending Backfill

结合三山岛金矿开采技术条件,设计采用房柱交替上升式充填采矿法回采三山岛金矿深部矿床,并在三山岛金矿直属矿区进行了试验。为获得最佳工艺参数,实现安全回采矿石资源,建立了理论分析模型,通过力学分析,探索了一二步采场时空变换的力学规律,利用MATLAB工具获得了一二步变换的安全步长,为采场支护设计提供了的理论依据。

Based on the technical condition for mining in Sanshan Ireland Gold Mine, alternate room-and-pillar mining with ascending backfill was adopted as a new mining method to explore deep gold deposit. Some experiments were performed in the area directly under Sanshan Ireland Gold Mine. In order to obtain optimal technological parameters for ensuring mining safety, a theoretical analysis model was established to explore mechanical laws of space-time transformation of the first and second step mining in stope through mechanical analysis. The variable step length for safe transformation was obtained by using MATLAB, which can provide an important theoretical basis for the support design of stope.