摘要
在地下开采过程中,往往留有各种不同形式的矿柱。矿柱支撑采场顶板的同时还维护采场围岩的稳定性,因此矿柱的稳定性是影响矿山安全生产的重大因素。借助声发射定位技术手段,对不同尺寸的矿柱做了一系列试验,旨在探索矿柱试件在加载过程中变形、破坏规律,并对矿柱试件的变形、破裂作出初步的预测。
In underground mining,there often remain various forms of pillars that can support the roof and main- lain the stability of surrounding rocks in the stope. So,in mining the stability of the pillars is a very important factor for the- production safety. With acoustic emission positioning technology,the paper performs a series of experiments on dif- fereol sizes of pilla,~4, with the purpose of exploring the deformation and the destruction rules in the loading process of the pillar specimens. This paper makes preliminary forecast about deformation and failure of the specimens of the pillars.
出处
《黄金》
CAS
2014年第1期34-38,共5页
Gold
关键词
单轴加载
裂纹扩展
矿柱破裂过程
声发射定位
矿柱破坏预测
Uniaxial compression loading
crac, k growth
failure process of pillars
acoustic emission positioning
prediction of pillar failure
