Relation between geotechnical and geophysical measurements on unimproved landing zones: a feasibility study
University of Rouen Normandy (UMR M2C)
Air Force Research Laboratory
Sorbonne University (UMR METIS)
CEREMA Normandy Centre
Ecole Nationale des Ponts et Chaussées (Navier Laboratory)
Characterizing potential landing zones is an enduring DoD (Department of Defense) requirement. The only currently approved process involves using the Dynamic Cone Penetrometer (DCP) in order to determine the California Bearing Ratio (CBR). The DCP test is labor and time intensive and frequently done in hostile locations.
A variety of geophysical techniques have been widely used for characterizing soil composition. This effort is designed to further understand whether these geophysical techniques can be applied to the characterization of potential landing zones. In order to further develop this approach, we propose to use geophysical techniques to characterize the near-surface variability mainly due to structural and hydraulic properties: EMI (electromagnetic induction), ERT (electrical resistivity tomography) and MSAW (Multichannel Seismic Wave Analysis).
The present project aims to state a quantitative relation between standardized compacted zones and on-the-go (electromagnetics based essentially) geophysical measurements.
100% on the project : Cécile Finco (post doc), Ao Wang (Post doc)
Rejiba, F., Schamper, C., Bodet, L., Fleitz, P., Ceranski, A., Fraga, L. C., Finco, C, Levaillant, R. (2019, May). Relation between dcp data and geophysical measurements on unimproved landing zones. In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2019 (pp. 283-287). Society of Exploration Geophysicists and Environment and Engineering Geophysical Society.
Finco C., Schamper C., Rejiba F., Cavalcante Fraga L.H. (Dec 2020). Full-Wave Modeling of Early Times in TDEM: Estimation of All Potential Coupling with Numerical FDTD Simulations. Conference Proceedings, NSG2020 26th European Meeting of Environmental and Engineering Geophysics, Dec 2020, Volume 2020, p.1 – 5. DOI: https://doi.org/10.3997/2214-4609.202020096