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Near-Surface Seismic Investigation with P- and S-Waves for Embankment Assessment in Poland
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, NSG 2025: 31st Meeting of Environmental and Engineering Geophysics, Sep 2025, Volume 2025, p.1 - 5
Abstract
Summary
Embankment deterioration can be driven by aging, foundation instability, seepage, internal erosion, voids, and cracking—all of which threaten structural integrity and demand effective monitoring solutions. This study combines three-component (3C) active seismic methods with distributed acoustic sensing (DAS) along the same survey profile at the Orzepowice embankment in Poland to enhance subsurface imaging and time-lapse monitoring. The 3C data show P-waves clearly in the vertical component and S-waves prominently in the horizontal components, while tau-p filtering significantly improves S-wave resolution. DAS, utilizing a single fibre optic cable to capture high-resolution strain measurements, outperforms traditional sensors in S-wave detection and offers broader spatial coverage. Key processing steps—such as noise attenuation, velocity analysis, statics, deconvolution, and migration—were applied to improve image clarity and structural interpretation. The integration of P- and S-wave data enables inversion of geomechanically attributes like fluid content, pore pressure, stress direction, and fracture patterns. The combination of 3C seismic and DAS facilitates detailed structural assessment and supports long-term monitoring of deformation processes, contributing to early damage detection and improved embankment stability evaluation.
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