裂隙介质弹性性质研究

THE RESEARCH OF ELASTIC PROPERTY IN FRACTURE MEDIA

波在介质中传播 ,主要是受介质的弹性性质的影响 ,在各向同性的岩石背景上 ,含有裂隙 ,岩石表现为各向异性 ,裂隙的形状不同 ,各向异性的性质也不同。本文在Hudson模型基础上 ,应用单散射理论 ,研究了垂直定向分布的裂隙介质 (EDA )、水平分布的裂隙介质 (PTL )、正交裂隙介质 (ORA)、两组垂直斜交的裂隙介质 (EDA +EDA)等 4种类型裂隙介质的弹性性质 ,给出弹性参数计算公式 。

Seismic wave propagation is mainly affected by the elastic property in the media. The media is anisotropy when the rock contains fractures on the isotropy background, and different fractures result in different anisotropy characteristics.On the basis of Hudson model and the application of single scattering theory,this paper studied the elastic properties in the EDA,PTL,ORA,EDA+EDA media, established the formula of elastic parameters and analyzed the internal relation between fractured media and anisotropy.