【摘要】 介绍了间接边界元法的基本理论,利用二维弹性动力边界积分方程解决了地震波在含裂纹介质中的散射问题。编写了地震波在二维非均匀介质中传播的数值模拟程序,模拟了爆炸点源在含裂纹介质中的传播情况,分析了裂纹的分布及填充物对波传播的影响。结果表明,边界元法是研究含裂纹介质中弹性波传播的有效工具。更多还原

【Abstract】 <Abstrcat>The indirect boundary element method (BEM) is presented. The wave propagation in cracked media is solved by means of 2-D dynamic boundary integral equation. A 2-D BEM program is developed to model the elastic waves excited by a point explosive source propagating in the fractured rocks. Numerical results show that the BEM is an effective method for seismic wave modeling.更多还原