Study of propagation of pulses of tunnel georadar in moist sandy-clayey soils

Sergey V. Druchinin; Sergey V. Izyumov; Alexander G. Chernokalov

doi:10.1117/12.390664

6 July 2000 Propagation of pulses of tunnel georadar in moist sandy-clayey soils

Sergey V. Druchinin, Sergey V. Izyumov, Alexander G. Chernokalov

Proceedings Volume 4129, Subsurface Sensing Technologies and Applications II; (2000) https://doi.org/10.1117/12.390664
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Attenuation and broadening of georadar signals in moist sandy- clayey soils was modeled depending on clay content and moisture of a soil. Antennas are of the slot type and are situated on the face of a tunneling machine. The pulse, radiated and received by this antennas and reflected by a perfectly conducting layer or small dielectric objects, was considered. Modeling has been carried out by integral equation method. For given signal to noise ratio the maximum distance of sounding have been calculated. The distance of sounding has been considered depending on size of the antennas, duration and shape of source pulse. The shape of signals depending on distance of sounding and soil parameters have been studied. To find dielectric permittivity of soils in wide frequency range a simple model was used, which takes into account the conductivity of the soil, dipole water relaxation and very wide spectrum of relaxation frequencies in clayey soils, which is due to Maxwell-Wagner effect in clay. Dielectric permittivity of several clayey soils, taken from tunnels, has been measured, and the model of soil has been adjusted with these experimental data.

Citation Download Citation

Sergey V. Druchinin, Sergey V. Izyumov, and Alexander G. Chernokalov "Propagation of pulses of tunnel georadar in moist sandy-clayey soils", Proc. SPIE 4129, Subsurface Sensing Technologies and Applications II, (6 July 2000); https://doi.org/10.1117/12.390664

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available