摘要
通过多种裂缝物理模型和MTS岩石物性测试系统 ,测试了不同材料和不同状态下裂缝模型的地震波特征响应 ,分析了裂缝特征参数的变化对地震波属性参数的影响。裂缝密度、方位、张开度的变化对纵横波的速度、振幅、衰减和主频等均有明显的影响 ,但裂缝参数的变化对地震波动力学特征参数 (振幅、主频等 )的影响远远大于对运动学特征 (速度等 )的影响 ,为利用地震波的振幅。
Seismic responses to fracture physical models made of different materials and under different conditions were measured using MTS (a rock mechanics test system). We analyzed the changes of seismic wave attributes with fracture characteristics. Seismic wave attributes such as velocity, amplitude, attenuation, etc are influenced significantly by fracture density, azimuth and aperture. The effect of fracture characteristics on the kinetics of seismic waves is stronger than on the kinematics. Therefore,seismic amplitude and attenuation may be much effective in detection of the fracture characteristics than seismic velocity.
出处
《勘探地球物理进展》
2003年第2期88-93,共6页
Progress in Exploration Geophysics
基金
国家自然科学基金项目 ( 4 0 1740 39)
中石化集团公司项目 (P0 10 5 8)
