Detection of cavities and fragile areas by numerical methods and GPR application
| Autor: | Mohamed Louzazni, Abdellah Driouach, Gamil Alsharahi, Ahmed Faize, Aye Mint Mohamed Mostapha, Mohamed Bayjja |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Diffraction
010504 meteorology & atmospheric sciences Acoustics Numerical analysis Finite-difference time-domain method 010502 geochemistry & geophysics 01 natural sciences Signal Modeling and simulation Geophysics Amplitude Ground-penetrating radar Reflection (physics) Geology 0105 earth and related environmental sciences |
| Zdroj: | Journal of Applied Geophysics. 164:225-236 |
| ISSN: | 0926-9851 |
| DOI: | 10.1016/j.jappgeo.2019.03.007 |
| Popis: | This work describes and investigates the cavities detection in urban areas using a non-destructive method by using the ground penetrating radar (GPR) and modeling by developing a numerical code based on the FDTD method. Moreover, based on the change in the amplitudes of the reflection and diffraction waves from the surfaces of the cavities, through which we can distinguish the cavities with high accuracy. In order to implement the experimental study, we chose different sites with different physical properties located in Morocco: mountainous (Quarries Khamis Anjara) and coastal area prepared for construction. The main objective of the geophysical detection of the cavities and the fragile areas to avoid significant risk on the construction works. The experimental results show a big similarly to the modeling simulation results. Ended, the simulation results using the amplitude signal of the waves show a high accuracy compared to Radargram. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect