采空区类框架结构支撑的力学稳定性分析  

Mechanical stability analysis on goaf analogous frame structure supporting

作　　者：刘丽华[1] 乔兰[2] 

机构地区：[1]长春工程学院 [2]北京科技大学

出　　处：《黄金》2009年第3期30-34,共5页Gold

摘　　要：中国南方某金矿开采蚀变糜棱岩型金矿床,矿山自投产十多年来一直应用浅眼留矿采矿法,随着生产中段的下降、间柱与顶柱的回采或倒塌,采空区面积越来越大,二次损失贫化增大,经营效益很差。利用人工钢筋混凝土矿柱与低品位矿石矿柱共同支撑采空区之类框架结构,经过多年实验与应用,取得了很好的经济及社会效益。通过运用有限单元法对类框架结构支撑采空区的力学稳定性分析,结果表明,该矿山实际采用的类框架结构,其安全性可以满足矿山生产要求。In an alteration mylonite gold deposit of South China, with the production midsection deepening and the ore pillars stopped after more than 10 years＇ mining, the goal is growing, the secondary loss and dilution is increasing and the economic benefit is obviously influenced. The experimental research on analogous frame structure supporting goaf, which is formed by artificial reinforced concrete pillar and low grade ore pillar, achieves great success. Mechanical stability analysis by finite element technique reveals that the analogous frame structure can meet the safety nroduction demands in mines.

关 键 词：采空区 类框架结构 力学稳定性 有限单元法 

分 类 号：TD853.391.2[矿业工程—金属矿开采]