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收稿日期: 2016-03-16
修回日期: 2016-04-24
网络出版日期: 2016-11-30
基金资助
湖南省研究生科研创新基金项目(CX2015B495)
Numerical Simulation of Ground Penetrating Radar Detection for Tunnel Lining and Its Application
Received date: 2016-03-16
Revised date: 2016-04-24
Online published: 2016-11-30
许德根 , 杨天春 , 程辉 , 张启 . 隧道衬砌探地雷达检测数值解析及应用[J]. 隧道建设, 2016 , 36(11) : 1343 -1347 . DOI: 10.3973/j.issn.1672-741X.2016.11.009
Twodimensional 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
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