A Train-Mounted GPR System for Operating Railway Tunnel Inspection
A Train-Mounted GPR System for Operating Railway Tunnel Inspection
复制标题
用于铁路隧道检查的车载探地雷达系统
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
W. Wentao
中科院分区：
文献类型：
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作者：
Xiong Hongqiang;Su Guofeng;Chunliu Zhang;L. Baoqing;W. Wentao
随着铁路隧道数量的不断增加和老化，定期检查将成为确保铁路运营安全的重要手段。为实现隧道的远距离、快速探测，研制了一种以空气耦合天线为核心，采用共享时窗模型的车载探地雷达系统。该系统由6组中心频率为300 MHz的空气耦合天线组成。天线与衬里之间的距离为0.5 ~ 4.0 m，系统扫描速率为976次/秒，探地雷达探测深度可达2.5 m。在理论设计下，列车最高速度可达70.27 km/h，扫描间隔为0.02 m。沈阳-丹东铁路客运专线试验结果表明，该系统能够识别衬砌厚度、衬砌后空隙和回填状态。
With the increasing number and aging of railway tunnels, regular inspection will be an important means to ensure the safety for operation railways. A train-mounted ground penetrating radar system with cores of air-coupled antennas and shared time-window model has been developed to allow for long-distance and fast inspection of tunnels. The system consists of 6 groups of air-coupled antennas with center frequency of 300 MHz. The distance between antenna and lining is 0.5–4.0 m, the scanning rate of the system is 976 scans/Sec and the detection depth of the GPR can reach to 2.5 m. Under the theoretical design, the maximum speed of train can reach 70.27 km/h with a scan interval of 0.02 m. The test results on Shenyang-Dandong railway passenger dedicated line show that the system can identify the thickness of lining, the void and the backfill state behind lining.