摘要
针对目前露天端帮压煤开采过程中防护设备抗冲击性较差,无法保证工作人员和开采设备的安全问题,设计研究了一种新型露天端帮防护顶棚。基于Hertz碰撞接触理论及能量耗散原理,建立了落石-端帮防护顶棚刚柔耦合模型,研究了该防护顶棚的抗冲击性。结合防护顶棚液压系统构建了机液联合仿真模型,探讨了在不同高度下不同质量岩石对防护顶棚的冲击影响规律。研究结果表明:防护顶棚具有良好的抗冲击性能,对露天端帮防护顶棚的抗冲击设计具有参考意义。
Aiming at the current problem that the protective equipment in the open-pit end coal mining process has poor impact resistance and can’t guarantee the safety of workers and mining equipment, a new type of open-end protection roof is designed and studied.Based on the Hertz collision contact theory and the principle of energy dissipation, the rigid-flexible coupling model of the rockfall-end protection roof was established, and the impact resistance of the protection roof was studied.Combined with the hydraulic system of the protective ceiling, a mechanical-hydraulic co-simulation model was constructed, and the impact law of different quality rocks on the protective ceiling under different heights was discussed.The research results show that the protective roof has good impact resistance, which is of reference significance to the impact design of the open end protection roof.
作者
王彦广
张宏
范晓东
游雅
WANG Yan-guang;ZHANG Hong;FAN Xiao-dong;YOU Ya(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《太原科技大学学报》
2021年第6期475-480,共6页
Journal of Taiyuan University of Science and Technology
基金
国家自然科学基金(52075355)
山西省自然科学基金(201701D121069)。
关键词
防护顶棚
Hertz碰撞接触理论
刚柔耦合
联合仿真
冲击
open slope protection roof
hertz collision contact theory
rigid and flexible coupling
co-simulation
impact
