High-Resolution Crosshole Seismic Tomography (CST) Studies on Nuclear Power Plant Foundation Site
V. Ignatev, A. Konkov, I. Polikarpov, A. Shuvalov and A. Oshkin
Event name: 25th European Meeting of Environmental and Engineering Geophysics
Session: High-Resolution Seismics II
Publication date: 11 September 2019
Info: Extended abstract, PDF ( 950.97Kb )
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This paper describes an example of crosshole seismic tomography (CST) fulfillment on the construction site of one nuclear power plant (NPP). The main objective was to characterize the site’s subsurface condition and calculate its elastic dynamic properties. Tomographic measurements were conducted among eight borehole pairs (i.e. among one central and four side wells). Deployment of specific approach for data processing and visualization allowed us to combine the obtained data in 3D mode in order to facilitate the interpretation process. According to the CST results, a dense system consisting of intersecting velocity sections that provide detailed information on the studied structure was constructed.