( 3 ) we can detection the azimuth of crack growth by abnormal amplitude or the discrepancy of wave - speed . ( 4 ) we can guess whether crack contains fluids by the change of p - wave speed . second , using pore model , under press and temperature , we have studied the influences of pore density on the characteristic parameters of seismic wave 第一、利用人工裂缝模型，研究了裂缝密度、方位和张开度的变化对地震波属性参数的影响，根据实验结果，总结出：可利用横波分裂的不同程度来检测裂缝密度的高低；可利用纵横波的振幅、主频、衰减(或品质因子q )和主振幅的变化来检测裂缝张开度的变化；可利用速度的差异和振幅异常来检测裂缝发育的方向；可利用纵波速度的变化来推测裂缝中是否含流体。
