摘要
台阶爆破过程中底盘抵抗线、孔径大小和超深尺寸都会对爆破效果和施工进度产生影响。为获得内蒙古白云鄂博西矿台阶爆破最佳底盘抵抗线、孔径和超深尺寸,采用ANSYS/DYNA数值仿真模拟了底盘抵抗线(550,600cm),孔径(150,310mm),超深(75,100cm)8组不同的模型,分析了坡底面位置处岩体应力变化曲线,由模拟应力峰值得出底盘抵抗线、孔径、超深值分别为600cm,150mm,100cm和550cm,310mm,75cm两组最佳爆破参数,并在实际工况下进行了爆破效果验证,结果与模拟效果基本吻合。
In the process of bench blasting,chassis resistance line,hole diameter and ultra-deep dimension will affect the blasting effect and construction progress.In order to obtain the optimum chassis resistance line,hole diameter and ultra-deep dimension of bench blasting in western Bayan Obo Mine,Inner Mongolia,eight different models with chassis resistance line(550 cm,600 cm),hole diameter(150 mm,310 mm)and ultra-deep dimension(75 cm,100 cm)were simulated by ANSYS/DYNA numerical simulation.The stress variation curve of rock mass at the bottom of slope was analyzed.The best two sets of blasting parameters with chassis resistance line,hole diameter and ultra-deep dimension were(600 cm,150 mm,100 cm)and(550 cm,310 mm and 75 cm),respectively.The blasting effect was verified under actual conditions,and the results were basically consistent with the simulation results.
作者
段军
张鹏飞
常建平
顾春雷
王梦瑶
DUAN Jun;ZHANG Pengfei;CHANG Jianping;GU Chunlei;WANG Mengyao(Inner Mongolia University of Science and Technology,Inner Mongolia 014010,China;Ba Run Mining Co.,Ltd,Baotou Steel Group,Inner Mongolia 014080,China)
出处
《矿业研究与开发》
CAS
北大核心
2019年第8期22-27,共6页
Mining Research and Development
关键词
底盘抵抗线
孔径
超深
数值仿真
台阶爆破
Chassis resistance line
Hole diameter
Ultra deep
Numerical simulation
Bench blasting
