Ultrasonic Echo Localization Using Seismic Migration Techniques in Engineered Barriers for Nuclear Waste Storage

Abstract In the framework of non-destructive-testing advanced seismic imaging techniques have been applied to ultrasonic echo data in order examine integrity an engineered test-barrier designed be used for sealing underground nuclear waste disposal site. Synthetic as well real multi-receiver acquired at test site were processed and imaged using Kirchhoff prestack depth migration reverse time (RTM). general, both methods provide a good image quality demonstrated by various case studies, however deeper parts within barrier containing inclined reflectors reconstructed more accurately RTM. particular, specific target reflector 8 m has significantly improved compared previous investigations synthetic aperture focusing technique, which justifies considerable computing this method.