不同岩石物性对超声波传播的影响

摘要

通过测量超声波在岩石样品中的传播速度，研究了岩石的结构构造、密度、孔隙度和弹性模量等物理特性对超声波传播的影响。实验结果表明：岩石的结构构造、密度和孔隙度对超声波波速影响较大，而动态弹性模量与超声波速度的关系则反应了岩石可承受形变的能力，超声波在岩石中的传播速度受多种岩石物性的影响，但也具有一定的传播规律。%The effects of rock texture and structure ,density ,void ratio ,elastic modulus and other physical properties on propagation of ultrasonic in rocks were investigated by measuring the ultrasonic propagation velocity in rock samples .The following results showed that the rock texture and struc-ture ,density and porosity had a greater impact on the ultrasonic velocity ;the relationship between dy-namic modulus of elasticity and ultrasonic velocity reflected the ability of rocks to withstand deforma-tion .All these indicated that ultrasonic wave velocities were affected by several extrinsic factors and some rules were found .