盐岩介质中空腔爆炸解耦因子的计算

对在美国内华达试验场盐岩介质中进行的Salmon 地下核爆试验( 填实爆炸,当量5.3kt,埋深828m) ,利用近区自由场加速度测试数据,计算了它的震源函数t() ,并且根据一维球对称爆炸膨胀源理论,计算了弹性响应空腔爆炸源的震源函数s()。由解耦理论,得到了盐岩介质的完全解耦空腔爆炸的解耦因子DF。

Calculation of Decoupling Factor for Nuclear Explosion in Salt Cavity

The Salmon event was a 5.3kt nuclear explosion detonated in a boring hole at a depth of 828 meters within the salt dome near Hattiesburg,Mississippi,USA.In this paper the Salmon ,s seismic source function (reduced displacement potential) is calculated by using the acceleration measured from the free field in the near region and the seismic source function of the cavity explosion is calculated too according to the explosion model where radial stresses are uniformly applied over the spherical surface and the material behaves elastically.Based on the decoupling theory the decoupling factor is then calculated and it shows that the decoupling factor is dependent on the frequency.