水下钻孔爆破的数值模拟  

NUMERICAL SIMULATION OF UNDERWATER DRILLING BLASTING

作　　者：齐世福[1] 刘新波[1] 李裕春[1] 

机构地区：[1]中国人民解放军理工大学工程兵工程学院,南京210007

出　　处：《工程爆破》2010年第4期13-17,共5页Engineering Blasting

摘　　要：利用LS-DYNA对水下钻孔爆破岩石破碎过程进行了数值模拟,根据不同厚度水层覆盖条件下的爆破物理图像,结合岩石内3个单元的应力变化时程曲线,对起爆后10ms内岩石中的应力变化进行了分析;并根据岩石中裂隙的形成和发展情况,对爆破动载作用下水下岩石的破坏情况进行了相应的理论分析。模拟结果可应用于水下钻孔爆破的参数设计。The fragmentation processes of rocks were numerically simulated by adopting LS-DYNA software in the underwater drilling blasting.According to the physical picture of different water-course thickness and time history of stress variation at 3 elements in rock,stress variation of rocks within 10 milliseconds after initiation was analyzed.Furthermore,based on formation and development of crack in rock,The destruction of underwater rocks under blasting action was theoretically analyzed.The simulation results can be referenced for parameters design of underwater drilling blasting.

关 键 词：水下钻孔爆破 岩石破碎 数值模拟 

分 类 号：TD235.47[矿业工程—矿井建设] TV542.5[水利工程—水利水电工程]