摘要
天井工程是国防和民用地下建筑中不可或缺的部分,但凿岩质量的好坏直接影响到中深孔爆破成井的效果,由于炮孔偏斜在现场实施中不可避免,因此,需开展考虑炮孔偏斜的中深孔爆破成井方案优化研究。通过精确测量炮孔的深度和位置,实现了炮孔三维模型构建,从而减少了炮孔位置的不确定性。基于不同高度的炮孔剖面图,对爆破成井方案进行了优化,将一次爆破成井修改为分次爆破成井,第一次爆破高度约3~4 m,第二次爆破高度约7 m,并根据炮孔实测位置调整了炮孔起爆顺序。现场工业试验表明,爆破后天井断面符合设计要求,整体成型良好,爆破块度均匀,考虑炮孔偏斜的中深孔爆破成井方案优化方法是切实可行的。本次实践对类似矿山工程的施工具有一定的参考价值。
The engineering of raises is an indispensable aspect of both national defense and civilian underground construction.However,the quality of rock drilling directly impacts the effectiveness of medium-deep hole blasting for raise construction.Due to the inevitable deviation of the borehole during on-site implementation,it is necessary to conduct research on optimization of raise completion scheme for medium-deep hole blasting considering borehole deviation.Precise measurements of borehole depth and position were employed to construct a three-dimensional model of the boreholes,thereby reducing the uncertainty in their positioning.Based on cross-sectional profiles of boreholes at different depths,the blasting for raise scheme was optimized,transitioning from one-time blasting to multiple blasting.The height of the first blasting was about 3-4 m,and the height of the second blasting was about 7 m.The blasting sequence of boreholes was adjusted according to the measured positions of blasting holes.On-site industrial tests showed that the cross-section of the raise after blasting met the design requirements,with good overall shape and uniform blasting block size.This indicated that the optimization method for the medium-deep hole blasting for raise completion scheme considering borehole deviation was practical and feasible.This practice has certain reference value for the construction of similar mining projects.
作者
侯成录
宋卫东
李佳伦
李杨
夏文浩
梁鹏亮
张少鹏
HOU Chenglu;SONG Weidong;LI Jialun;LI Yang;XIA Wenhao;LIANG Pengliang;ZHANG Shaopeng(Sanshandao Gold Mine of Shandong Gold Mining(Laizhou)Co.,Ltd.,Laizhou Shandong 261442,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of High-Efficient Mining and Safety of Metal Mi nes,Ministry of Education,Beijing 100083,China;BGRIMM Intelligent Technology Co.,Ltd.,Beijing 102628,China)
出处
《有色金属(矿山部分)》
2025年第2期73-79,共7页
NONFERROUS METALS(Mining Section)
基金
“十四五”国家重点研发计划项目(2022YFC2905003)。
关键词
爆破成井
炮孔偏斜
炮孔三维建模
方案优化
爆破参数
blasting for raise
borehole deviation
3D modeling of blast holes
scheme optimization
blasting parameters
