Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical Application of Full Waveform Inversion to Identify a Single Weak Layer in a Slope
Weak layers in a slope can undermine its stability over time, particularly when the slope is subjected to rainfall and seismic activities. A challenging task for engineers is to properly identify the presence and extent of such layers. Conventional investigation methods such as cone penetration test and standard penetration test only focus on the localized region surrounding the measurement location and may not provide adequate information by which to evaluate the spatial extent of the layer. Nondestructive/geophysical testing methods can overcome this limitation and can assist practitioners with their assessment of the subsurface. In this regard, full waveform inversion (FWI) is a high-resolution seismic method that builds velocity models by minimizing the residuals between observed and synthetic waveforms. In a pure numerical framework, this study presents a case that studied the effectiveness of FWI to identify a single weak layer with a stiffness of 1/3 of that of the competent material of a slope. Results from the FWI approach provided a promising image of the location and geometric extent of the weak layer that aided in assessing the overall stability of the slope.
Numerical Application of Full Waveform Inversion to Identify a Single Weak Layer in a Slope
Weak layers in a slope can undermine its stability over time, particularly when the slope is subjected to rainfall and seismic activities. A challenging task for engineers is to properly identify the presence and extent of such layers. Conventional investigation methods such as cone penetration test and standard penetration test only focus on the localized region surrounding the measurement location and may not provide adequate information by which to evaluate the spatial extent of the layer. Nondestructive/geophysical testing methods can overcome this limitation and can assist practitioners with their assessment of the subsurface. In this regard, full waveform inversion (FWI) is a high-resolution seismic method that builds velocity models by minimizing the residuals between observed and synthetic waveforms. In a pure numerical framework, this study presents a case that studied the effectiveness of FWI to identify a single weak layer with a stiffness of 1/3 of that of the competent material of a slope. Results from the FWI approach provided a promising image of the location and geometric extent of the weak layer that aided in assessing the overall stability of the slope.
Numerical Application of Full Waveform Inversion to Identify a Single Weak Layer in a Slope
Mahvelati, Siavash (Autor:in) / Coe, Joseph T. (Autor:in)
Geo-Congress 2020 ; 2020 ; Minneapolis, Minnesota
Geo-Congress 2020 ; 211-219
21.02.2020
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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