Application of Ground Penetrating Radar to Identify Shallow Cavities in a Coastal Dyke

Yumin Vincent Kang; Hui-Chi  Hsu

doi:10.6180/jase.2013.16.1.04

Application of Ground Penetrating Radar to Identify Shallow Cavities in a Coastal Dyke

Yumin Vincent Kang This email address is being protected from spambots. You need JavaScript enabled to view it.¹ and Hui-Chi Hsu¹

¹Department of Civil Engineering and PhD Program in Civil and Hydraulic Engineering, Feng Chia University, Taichung, Taiwan, R.O.C.

Received: November 16, 2012
Accepted: March 1, 2013
Publication Date: March 1, 2013

Download Citation: ||https://doi.org/10.6180/jase.2013.16.1.04

ABSTRACT

Hidden cavities in a coastal dyke are key indications of possible soil subsidence or seepage piping within the soil of the dyke. The main purpose of this research was to study the detectability and location of cavities in a coastal dyke using the ground penetrating radar method (GPR). A series of numerical simulations and field tests were conducted. The results show that the average area difference of GPR signals is influenced by the size of a cavity. Using the average area difference curve, shallow cavities in a coastal dyke can be identified effectively.

Keywords: Flood Disaster, Global Warming, Greenhouse Effect, Numerical Simulation, GprMAX

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