【摘要】 <正> 在覆盖区,断层隐蔽于地下,但因其常伴有与原岩成分、结构、构造有明显差异的构造岩,故应用声波测井信息也可以较好地鉴别其位置及力学性质。一、岩石组构、物性与声波传播速度的关系声波在岩石中的传播速度随岩石的密度、弹性模量以及含水量的加大而加大,随孔隙度的增大、更多还原

【Abstract】 The mechanical properties of four faults concealed by loose Quarternary deposits in Shengli Oilfield are studied with the information of acoustic log-ging in the light of principals of mechanism geology.Various characteristicsof time difference anomaly have been traced in faults of different mechanicalproperties,a new method for identifying them is simultaneously turned out inthis paper.It is proved in the living example researched that tectonites withincompresive fault belt give rise to a clearly smaller time difference of acousticwave than those of lithologically the simillar non-tectonites,that is to say,a faster acoustic velocity is transmitted by the former;on the contrary,a lar-ger time difference of acoustic wave have recorded in tectonites within tensionalfault belts,i.e.the acoustic velocity within these belts is lower.更多还原