露天矿邻近边坡爆破减震沟减震效应分析  

Analysis of Shock Absorption Effect on the Damping Ditch near the Slope in Open-pit Mine

作　　者：张云鹏[1] 武旭[1] 

机构地区：[1]河北联合大学河北省矿业开发与安全技术重点实验室,河北唐山市063009

出　　处：《矿业研究与开发》2015年第2期25-28,共4页Mining Research and Development

摘　　要：为了降低爆破地震对露天边坡的影响,采用数值模拟的方法,建立不同深度和宽度的减震沟模型,对边坡稳定性的影响进行分析研究。结果表明,减震沟宽度对减震效果的影响较小,减震效果随着减震沟深度的加深而增强且距边帮3 m时最佳;通过现场实验,减震沟的降震率可以达到65%以上。In order to reduce the influence of blasting vibration on the slope,the models of damping ditch with different depths and widths were established by numerical simulation. The influence of damping ditch on slope stability was studied. Results showed that,the shock absorption effect enhanced with the increase of ditch depth,rather than the ditch width. When the damping ditch was 3 meters away from the slope,the shock absorption effect was optimal. Field experiments indicated that the damping ditch would decrease the blasting vibration above 65%.

关 键 词：露天边坡 台阶爆破 减震沟 数值模拟 边坡稳定性 

分 类 号：TD854.2[矿业工程—金属矿开采]