论文部分内容阅读
多组任意夹角直立裂隙的排列方式比单组平行排列直立裂隙更具一般性,因此本文基于线性滑动理论和Hudson理论,将上述多组任意夹角直立裂隙介质等效为单斜各向异性介质,给定物性参数计算刚度矩阵,运用交错网格高阶有限差分法求解三维单斜介质弹性波一阶速度-应力方程来模拟弹性波在单斜介质中的传播过程.通过分析不同物性下的波场和共炮点道集,不同偏移距下的方位角道集,说明裂隙物性与波场特征之间的关系,以及其方位特征信息.
In this paper, based on the theory of linear sliding and Hudson theory, the above groups of arbitrary angles of upright fractured media are equivalent to monoclinic anisotropy Medium and given the physical parameters, the first-order velocity-stress equation of three-dimensional monoclinic elastic wave was solved by using the staggered-grid high-order finite difference method to simulate the propagation of elastic wave in the monoclinic medium. Wave field and common shot gathers and azimuth gathers at different offsets, indicating the relationship between fracture physical properties and wave field characteristics and their bearing characteristic information.