纵-扭复合振动辅助岩石钻削机理及效率
Mechanism and Efficiency of Combined Longitudinal-Torsional Vibration-Assisted Rock Drilling
高大湧 1林建勇 1田雅婷 1姚红良1
作者信息
- 1. 东北大学 机械工程与自动化学院,辽宁 沈阳 110819
- 折叠
摘要
针对单一纵向或扭转振动辅助岩石钻削的局限性,提出纵-扭复合振动辅助岩石钻削方案.首先对该方案的理论模型进行分析;然后基于EDEM(event driven execution manager)软件的离散元法(discrete element method,DEM)对不同情况下岩石的钻进机理和效果进行模拟,结果表明添加纵-扭复合振动辅助相对于无振动、纵向振动和扭转振动方案,钻头受到的最大合力分别减小了36.45%,9.34%和32.84%,钻进速度分别提高了26.02%,4.27%和16.13%;最后对所提方案的钻进效果进行试验验证,得到添加纵-扭复合振动辅助后的钻头支架应变相对于只添加扭转振动辅助时减小了35.48%,钻进速度提高了31.25%.研究表明纵-扭复合振动辅助方法可以提高岩石钻削效率.
Abstract
In response to the limitations posed by singular longitudinal or torsional vibration-assisted rock drilling,a combined longitudinal-torsional vibration-assisted rock drilling scheme was proposed.Firstly,the theoretical model of the scheme is analyzed.Then,DEM(discrete element method)simulations using EDEM(event driven execution manager)software are conducted to simulate the drilling mechanism and effects on rocks under various conditions.Results indicate that the addition of combined longitudinal-torsional vibration assistance decreases the maximum resultant force on the drill bit by 36.45%,9.34%and 32.84%,respectively,compared to zero vibration,longitudinal vibration,and torsional vibration schemes.Moreover,drilling speeds increase by 26.02%,4.27%and 16.13%,respectively.Finally,experimental validation of the proposed scheme's drilling performance reveals a 35.48%reduction in the drill head's support strain and a 31.25%increase in the drilling speed when compared to solely adding torsional vibration assistance.It is demonstrated that the combined longitudinal-torsional vibration-assisted method can significantly enhance the efficiency of rock drilling.
关键词
岩石钻削/振动辅助/复合振动/离散元法/钻削效率Key words
rock drilling/vibration assistance/combined vibration/DEM(discrete element method)/drilling efficiency引用本文复制引用
出版年
2024
NETL
NSTL
万方数据