摘要
利用一维球对称有限差分数值计算源程序模拟了硬岩中地下强爆炸的震源函数,给出了弹性半径处的位移、径向压力波形,得到了地下爆炸的折合位移势及其源频谱。相关计算结果与已有文献给出的结果一致。同时,对介质剪切强度与地下爆炸震源强度之间的关系进行了数值分析。研究结果可为硬岩中地下强爆炸地震耦合效应的计算提供参考。
The explosion seismic source function in hard rock was numerically simulated with a one- dimensional spherical symmetric finite difference code. The following factors were calculated as the displacement and radial pressure at the elastic radius, the reduced displacement potential and source spectrum. These calculated results are in agreement with the existent results. And the relationship between seismic coupling strength and material shear strength was discussed. It is found that the seis- mic source strength of underground explosion decreases with the increase of material shear strength.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2009年第6期648-653,共6页
Explosion and Shock Waves
关键词
爆炸力学
震源函数
有限差分数值计算源程序
地下爆炸
折合位移势
mechanics of explosion
seismic source function
finite difference code
underground explosion
reduced displacement potential
