中文摘要：

大坝CT检测具有能快速无损地探测大坝内部较深部位隐患的优点,相关研究工作越来越受到重视。论文对分别基于检测弹性波、电磁波和电阻率分布来实现的三种大坝CT技术进行了简介,重点对目前认为较为成熟的声波大坝CT技术从可行性、原理、硬件设置、软件技术等方面总结了其研究进展。对声波大坝CT技术研究中存在的关键问题和今后的发展趋势进行了讨论。

英文摘要：

Since dam-CT can monitor the dam′s deep interior fast and nondestructively,the technique has been receiving increasing emphasis.This paper introduces the techniques of dam-CT that are based on de-tection of the distribution of elastic waves,electromagnetic waves and electric resistance.In particular,re-search advances in the relatively mature area of acoustic-wave dam CT is reviewed with respect of its feasibility,the working principles,hardware equipment and software techniques.Key problems and the de-velopment trend of the acoustic-wave dam CT research are discussed.