摘要
金属矿山经过长时间的露天开采后,在逐步转为地下开采时,矿山将面临露天矿坑的挂帮矿开采与地下开采同时进行的局面,而地下开采时的爆破震动所产生的动载对于露天边坡的稳定性影响十分重大。以杏山铁矿露天转地下开采为工程背景,应用现场声发射的监测方法,监测每次爆破时的能量大小以及信号的传播规律,通过FLAC3D软件进行数值模拟分析爆破震动对于露天边坡稳定性的影响。监测结果及分析可为杏山铁矿安全生产提供参考。
After certain time of mining,metallic mines gradually shift into underground mining. Since there are still remaining ores in open pit,the mine will face a situation of simultaneous proceeding of open-pit and underground mining. However,the dynamic load underground blasting vibration has brought up has a great influence on the open-pit slope stability. The paper takes the transition of Xingshan Iron Mine from open-pit to underground mining as the engineering background,by using the acoustic emission monitoring method,monitors the blasting energy of each time and signal propagation law. Effect of blasting vibration on slope stability by FLAC3 Dnumerical simulation is studied. The monitoring data and analysis can be used for reference for the safety production in Xingshan Iron Mine.
出处
《黄金》
CAS
2015年第1期36-39,共4页
Gold
基金
北京城市学院校内实践教学基地建设项目(2014-mc)
关键词
金属矿山
露天转地下
边坡稳定
爆破震动
声发射
FLAC^3D
metallic mine
from open-pit to underground
slope stability
blasting vibration
acoustic emission
FLAC3D
