南华大学学报（自然科学版）2025，Vol.39Issue(1)：26-34,9.DOI:10.19431/j.cnki.1673-0062.2025.01.005
某铀矿山中深孔爆破参数优化数值模拟
Numerical Simulation on Parameter Optimization of Medium-deep Hole Blasting in a Uranium Mine
摘要
Abstract
In order to improve the mining efficiency of stope in a uranium mine,ANSYS/LS-DYNA was used in numerical simulation of medium-deep hole blasting in the stope.A full-section 3D numerical model of fan medium-deep holes was established based on the physical and mechanical properties of the on-site ore body and the parameters of the explo-sive material.The influence of hole diameter(55 mm,65 mm,75 mm),hole bottom dis-tance(1.5 m,1.8 m,2.0 m)and row spacing(1.2 m,1.5 m,1.8 m)on the blasting fragmentation effect of the ore body and the vibration of the roof were simulated under the conditions of different millisecond times(0 ms,25 ms,50 ms)by orthogonal experiments.Simulation results show that millisecond blasting produces stress superposition effect,which creates favorable conditions for the rock fragmentation of the back row,and at the same time effectively reduces the vibration velocity of the top roof.The blasting fragmentation of rock is best when the millisecond time is 25,and the lowest vibration velocity of the top roof in the stope is achieved when the millisecond time is 50.With comprehensive analysis and comparison,the optimal blasting parameters of fan-shaped medium-deep holes is determined:millisecond time of 25 ms,the hole diameter of 65 mm,the hole bottom distance of 1.8 m,and the row spacing of 1.5 m.关键词
中深孔爆破/ANSYS/LS-DYNA/正交实验/参数优化/数值模拟Key words
deep hole blasting/ANSYS/LS-DYNA/orthogonal test/parameter optimization/numerical simulation分类
矿山工程引用本文复制引用
姚小伟,谢国森,蒲成志,李广悦..某铀矿山中深孔爆破参数优化数值模拟[J].南华大学学报（自然科学版）,2025,39(1):26-34,9.基金项目
感谢中核集团集中研发"棉花坑矿井安全高效开采技术研究"项目对本论文的资助 （）
