爆破2025，Vol.42Issue(2)：73-80,8.DOI:10.3963/j.issn.1001-487X.2025.02.009
台阶爆破过程中内部岩体运移轨迹及爆堆分布规律研究
Study on Internal Rock Mass Movement Trajectory and Muckpile Distribution during Bench Blasting
摘要
Abstract
As a main mean of open-pit mining,bench blasting is still an irreplaceable production method at pres-ent and even in the future.By deeply analyzing the measured data of bench blasting and using 3DEC software to sim-ulate the bench blasting process,the internal rock mass movement trajectory and muckpile distribution during the bench blasting process were revealed.The research results show that the monitoring points generally rose along the vertical direction first and then fell during the blasting process.Among them,the movement of the monitoring points on the upper part of the monitoring hole were more obvious in the vertical direction,rising to a certain height and then quickly moving vertically downward.While the monitoring points on the lower part of the monitoring hole mainly moved forward in the horizontal direction,and the vertical direction movement is relatively weak.At the same time,in order to study the spatial distribution of the muckpile,the bench in the research area were divided into six parts,asⅠ～Ⅵ.Besides,the main part(0～40 m)of the muckpile was divided into four regions,as A,B,C and D.Accord-ing to the simulation results,it can be found that the Ⅴ rock mass accounts for the most in region A(muckpile 0～10 m),which is as high as 41.7％.The Ⅰ～Ⅴ rock mass distribution is relatively even in region B(muckpile 11m～20 m).The Ⅰ～Ⅲ rock mass accounts for 43.1％,37.5％ and 19.3％,respectively,and the Ⅳ rock mass ac-counts for a very small part in region C(muckpile 21～30 m).It is basically composed of the Ⅰ rock mass in region D(muckpile 31～40 m)at the forefront of the blast muckpile,which accounts for 95％.关键词
台阶爆破/现场监测/数值模拟/岩体运移规律/爆堆分布规律Key words
bench blasting/field monitoring/numerical simulation/rock mass movement trajectory/muckpile distribution分类
矿业与冶金引用本文复制引用
李志恒,白俊,金长宇,陈立军..台阶爆破过程中内部岩体运移轨迹及爆堆分布规律研究[J].爆破,2025,42(2):73-80,8.基金项目
国家自然科学基金(41972284、41974028) （41972284、41974028）
中央高校基本科研业务费专项资金(No.N2101041) National Natural Science Foundation of China(41972284,41974028),Special Fund for Basic Scientific Research for Central Universi-ties(No.N2101041) （No.N2101041）
