摘要
根据公路隧道二次衬砌的现场情况,制作了足尺的衬砌模型,并在模型中设置了模拟隧道二次衬砌背后空洞、回填不密实等典型缺陷工况,采用地质雷达进行检测试验。试验结果显示:采用不同频率的雷达天线时,异常体的测试分析结果有较明显的差异,并表现出了各自的优缺点;同时结合天线选用、探测方式选择、时长参数设定、信号位置调整及脉冲响应滤波设置等条件提出了相应的处理建议,可供使用地质雷达法检测隧道二次衬砌的工程技术人员参考。
According to the situation of the highway tunnel secondary lining, a full-scale model of lining is made, and some typical defects such as behind empty, incompact backfill condition are set up to simulate the tunnel secondary lining defect condition, testing by ground penetrating radar. Experimental results show that. using different frequency of radar antenna, abnormal body has the obvious difference, test and analysis results show the respective advantages and disadvantages; combined with the selection of the antenna, detection options, range parameter setting, signal position adjustment, impulse response and put forward appropriate disposal suggestions, available method of ground penetrating radar detection for secondary lining of tunnel engineering and technical personnel for reference.
出处
《公路》
北大核心
2016年第2期201-208,共8页
Highway
基金
贵州省交通科研项目
项目编号2012-121-035
关键词
公路隧道
二次衬砌
厚度
密实性
地质雷达
highway tunnel
secondary lining
depth
compactness
ground penetrating radar
