摘要
为了提高露天矿山深孔台阶爆破质量,通过对某矿区现有台阶爆破参数和大块率进行现场调研,提出压渣爆破技术方案,结合LS⁃DYNA软件仿真分析与理论计算,得到适宜的孔网参数和压渣厚度,并将该参数应用于现场爆破试验。结果表明,压渣厚度5 m、孔间距5 m、抵抗线4 m为适宜爆破参数,该条件下现场爆破试验平均大块率小于7%,取得了良好的爆破效果。
In order to improve the effect of deep⁃hole bench blasting in open⁃pit mines,a buffer blasting technique was proposed based on the on⁃site investigation of existing bench blasting parameters and rock fragmentation.In combination with simulation study by using LS⁃DYNA software and theoretical calculation,optimal borehole parameters and buffer thickness were finally determined,which were applied into the field blasting experiment.With buffer thickness of 5 m,borehole spacing of 5 m and burden of 4 m,the field blasting experiment brought an average fragmentation of less than 7%,showing a good blasting effect.
作者
崔年生
楼晓明
CUI Niansheng;LOU Xiaoming(Fujian Xinhuadu Engineering Co Ltd,Xiamen 361002,Fujian,China;Zijin School of Geology and Mining,Fuzhou University,Fuzhou 350108,Fujian,China)
出处
《矿冶工程》
CAS
北大核心
2023年第4期44-47,共4页
Mining and Metallurgical Engineering
基金
国家自然科学基金(52109124)。
关键词
露天开采
台阶爆破
压渣爆破
爆破参数优化
工业试验
数值分析
open⁃pit mining
bench blasting
buffer blasting
blasting parameter optimization
commercial experiment
numerical analysis