Down-hole acoustic televiewer (ATV logging) is a geophysical well-logging device known to be able to reveal underground in-depth image. However, reviewing the current developments in the area of geotechnical engineering, ATV logging data were predominantly used for the purpose of visualizing and calculating the specific structural features in an open borehole, and nothing more. Noticeably, to the majority of engineering applications, it appears that ATV logging played a minor role compared to other geophysical borehole logging tools. Our study does not take it for granted. A systematic study is presented of the significance and consequent applications of ATV logging. The significance of correlation between acoustic amplitude and different geotechnical parameters is discussed and found to be consistent with previous findings. The result tells that ATV logging is actually able to provide timely and ground-truth information during site characterization, if properly used. Additionally, in our study, a simple rock mass evaluation index, Aco-RQD, is proposed, which is applicable to all aspects of geotechnical engineering as long as the continuous ATV logging data are available.

井下声讯电视取景器（ATV测井仪）是一种地球物理的测井仪，已知能够显示地下深度图像。但是，回顾岩土工程领域的最新发展，ATV测井数据主要用于可视化和计算裸眼井眼中的特定结构特征，仅此而已。值得注意的是，对于大多数工程应用而言，与其他地球物理钻孔测井工具相比，ATV测井似乎起着较小的作用。我们的研究并不认为这是理所当然的。本文对ATV测井的意义及其后续应用进行了系统的研究。讨论了声振幅与不同岩土参数之间相关性的重要性，发现与先前的发现相符。结果表明，如果使用得当，ATV测井实际上能够在现场表征期间提供及时的地面信息。此外，在我们的研究中，提出了一个简单的岩体评估指数Aco-RQD，只要连续ATV测井数据可用，该指数就可应用于岩土工程的各个方面。