露天采矿技术2026，Vol.41Issue(3)：15-20,6.DOI:10.13235/j.cnki.ltcm.20250305
SICOMINES铜钴矿深孔爆破钻孔合理超深研究
Study on drilling rational overdepth of deep hole blasting in SICOMINES copper-cobalt mine
摘要
Abstract
To solve the problem of blasting toe in the SICOMINES copper-cobalt mine,the article derives an overdepth calculation formula based on the open-pit mine drilling overdepth calculation method and Livingston's blasting crater theory,systematically discusses the influences of key factors such as geological conditions,blasting parameters,explosive performance and construction technology on the reasonable overdepth design of deep-hole blasting.Based on the LS-DYNA finite element software,we establish three finite element models with overdepths of 1.0 m,1.1 m,and 1.2 m respectively,and carry out numerical simulation and blasting effect analysis,explore the reasonable overdepth by analyzing the stress characteristics of the rock at the bottom of the hole and the variation law of stress wave intensity.The results show that when the overdepth is 1.1 m,the bench toe is basically controlled,and the expected blasting effect can be achieved.关键词
爆破漏斗/深孔爆破/钻孔超深/根底/LS-DYNAKey words
blasting crater/deep hole blasting/drilling overdepth/bench toe/LS-DYNA分类
矿业与冶金引用本文复制引用
祁晓鑫,唐昌应..SICOMINES铜钴矿深孔爆破钻孔合理超深研究[J].露天采矿技术,2026,41(3):15-20,6.基金项目
中国中铁股份有限公司科技研究开发计划资助项目(2025-专项-03) （2025-专项-03）
