| 海堤探地雷达探测模型试验研究 |
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| 引用本文： | 宋华,王立忠.海堤探地雷达探测模型试验研究[J].岩石力学与工程学报,2011,30(Z1):2826-2833. |
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| 作者姓名： | 宋华 王立忠 |
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| 作者单位： | (浙江大学 建筑工程学院，浙江 杭州 310058) |
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| 摘 要： | 针对探地雷达在海堤探测中的应用，制作试验模型。试验在不同盐水浸没深度下进行，通过把实测结果与FDTD二维正演模拟进行对比验证，在波形图中识别反射面位置，并计算双程走时差，结合波速来得到各断面底界埋深和形态。就盐水对探测的影响进行评估，试验结果表明，不含海水时探地雷达可以很好地识别海堤的抛石底界。在海水浸没条件下，介质的介电常数和电导率会明显增大；同时，探测误差也随浸没深度而增大，界面形态变平缓。利用正演模拟得到的线性影响线特性，对模型试验的误差进行修正，以此为探地雷达在海堤的实际应用提供参考和依据。
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| 关 键 词： | 地球物理探地雷达抛石海堤模型试验介电常数二维正演抛石底界 |
| 收稿时间： | 2009-11-18; |
STUDY OF GPR MODEL EXPERIMENT FOR DETECTING COASTAL EMBANKMENT |
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| SONG Hua,WANG Lizhong.STUDY OF GPR MODEL EXPERIMENT FOR DETECTING COASTAL EMBANKMENT[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(Z1):2826-2833. |
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| Authors: | SONG Hua WANG Lizhong |
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| Affiliation: | (College of Civil Engineering and Architecture，Zhejiang University，Hangzhou，Zhejiang 310058，China) |
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| Abstract: | In order to analyze the application of ground penetrating radar(GPR) in coastal riprap embankment,the model experiment is conducted.The experiment is carried out under different depths of saltwater.Then,through comparing the measured results with those obtained by numerical FDTD analysis for verification,the target reflection interface can be distinguished in waveform figure;the depth and shape image of riprap bottom boundary are investigated after calculating travel time difference and velocity.According t... |
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| Keywords: | geophysics ground penetrating radar(GPR) riprap coastal embankment model experiment dielectric coefficient two-dimensional forward simulation riprap bottom boundary |
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