探地雷达隧道衬砌质量检测技术

A TENTATIVE DISCUSSION ON TUNNEL LINING QUALITY OF GPR DETECTION TECHNOLOGY

通过总结工程实践经验,结合理论知识,对探地雷达在铁路隧道衬砌厚度、衬砌背后回填密实度、衬砌内部钢筋、钢架检测时应注意的问题进行了归纳和阐述,尤其是对衬砌厚度的检测精度,双排钢筋情况下对第二排钢筋的判读和二衬内存在钢筋网的情况下对初衬钢架的检测。旨在说明探地雷达在目前科技水平下的实际检测能力,让广大工程技术人员对探地雷达能够解决的问题有进一步的认知。

Combining the engineering practical experience with theoretical knowledge,this paper has summarized the problems that should be tackled when the ground penetrating radar is employed in such aspects as railway tunnel lining thickness,cavity behind the lining,internal reinforcement and steel frame detection,especially the detection accuracy of the lining thickness,the interpretation of the second rows of steel in the cases of double layers reinforcing and steel frame detection when the lining has been reinforced. This paper aims to show the actual detection capability of the ground penetrating radar at the current level of science and technology with the purpose of helping the engineers and technicians to have a further cognition of the problems that can be solved by radar.