基于ANSYS/LS-DYNA软件的水下钻孔爆破数值模拟

Numerical simulation of underwater drilling blasting based on ANSYS/LS-DYNA software

结合ANSYS/LS-DYNA对水下钻孔爆破进行数值模拟分析,建立水介质轴向不耦合和空气轴向不耦合单孔钻孔爆破模型,对岩石爆破破碎机理进行研究。通过数值模拟进一步验证了水介质不耦合装药结构较空气不耦合装药结构爆破的优越性,能量利用率得到较大提高,同时得到了在水介质不耦合状态下的最佳水下钻孔爆破装药结构形式。对于航道整治、港口码头建设中涉及水下炸礁工程应用具有一定的参考价值。

Based on ANSYS/LS-DYNA,we carry out the numerical simulation analysis of underwater drilling blasting,establish the axial uncoupling and air axial uncoupled single hole drilling blasting model of water medium,and research the mechanism of rock blasting fracture.Furthermore,the superiority of the uncoupled charge structure of the water medium compared with the air uncoupled charge structure blasting is demonstrated by the numerical simulation,the energy utilization rate is greatly improved,and the optimal structural form of underwater drilling and blasting charge in the uncoupling state of the water medium is obtained.The structural form has certain reference value for the application of underwater reef engineering in waterway rectification and port terminal construction.