基于ANSYS/LS-DYNA水下钻孔爆破数值模拟

运用非线性显式动力分析程序ANSYS/LS-DYNA建立水下钻孔爆破数值仿真模型,在考虑水体重力作用下,对不同起爆方式和不同堵塞材料下水下岩体钻孔爆破效果进行分析,分别得出压力时程曲线图、速度时程曲线图和竖向应力时程曲线图.结果表明:不同起爆方式、不同堵塞材料作用下岩石的爆破效果不同,且在不同部位其爆破效果也受到起爆方...

Numerical Simulation of Underwater Drilling Blasting Based on ANSYS/LS-DYNA

This paper will use the dynamic analysis program ANSYS/LS-DYNA to establish a numerical model of underwater drilling and blasting. Considering the effect of water weight, the effects of underwater rock drilling and blasting under different initiation methods and different blocking materials are analyzed, and the results are obtained respectively Pressure time history graph, velocity time history graph and vertical stress time history graph. The results show that the blasting effect of rock under different initiation methods and different blocking materials is different, and the blasting effect in different parts is also affected by the initiation method and the blocking material, however, the effect of a single plugging material on the rock breaking effect is not great, especially at the position of the rock-water contact surface, under the effects of water material blockage and gun mud material blockage, the blasting at both ends makes the stress disturbance generated by rock blasting more uniform, and the overall blasting effect is good. Therefore, in actual engineering, different initiation methods and blocking materials should be selected according to the blasting focus to better achieve the expected blasting effect.