Numerical Simulation of Ground Penetrating Radar Detection for Tunnel Lining and Its Application

doi:10.3973/j.issn.1672-741X.2016.11.009

Tunnel Construction ›› 2016, Vol. 36 ›› Issue (11): 1343-1347.DOI: 10.3973/j.issn.1672-741X.2016.11.009

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Numerical Simulation of Ground Penetrating Radar Detection for Tunnel Lining and Its Application

XU Degen¹, YANG Tianchun¹, CHENG Hui², ZHANG Qi¹

（1. College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China; 2. Engineering Research Center of Advanced Mining Equipment, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China）

Received:2016-03-16 Revised:2016-04-24 Online:2016-11-20 Published:2016-11-30

Abstract

Abstract:

Twodimensional forward model of hollow beneath the steel fabric of tunnel lining and behind tunnel lining is established based on finite difference time domain (FDTD) method and finite element method (FEM). The modeling results are compared with actual case. The results show that: 1） The higher the center frequency of the radar antenna is, the higher the resolution is, and the better the interpretation is. 2) The smaller the density of the reinforcement is, the better the detection effect of radar is. The accuracy and interpretation precision of ground penetrating radar （GPR） detection of tunnel lining can be improved by combining the forward simulation method and site monitoring.

Key words: tunnel lining, GPR, FEM, FDTD, numerical simulation

CLC Number:

U 456

XU Degen, YANG Tianchun, CHENG Hui, ZHANG Qi. Numerical Simulation of Ground Penetrating Radar Detection for Tunnel Lining and Its Application[J]. Tunnel Construction, 2016, 36(11): 1343-1347.

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Numerical Simulation of Ground Penetrating Radar Detection for Tunnel Lining and Its Application

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