APPLICATION OF ELASTIC WAVE CT TO DETECTING THE REINFORCEMENT EFFECT OF A PORT

Qingdao port is an important port in northen China. But there exists hidden peril in its service as it has long been out of repair. Compared with several reinforcement schemes,the scheme of vertical grouting was adopted finally. In order to detect the reinforcement effectiveness of the port by underwater high-pressure grouting,the elastic wave CT technique, and detection of wave velocity and point loading strength of the rock core specimens are adopted. In this article,the principle of detection and the elastic wave computer-aided tomography (CT) are introduced and the application of elastic wave CT to examining the effect of grouting is discussed. It is confirmed that elastic wave CT technique is uniquely effective in detecting the effect of grouting at high pressure under water.