探地雷达在公路建设中的应用研究

近年来,我国公路建设发展迅速。探地雷达作为一种新型的高分辨无损探(检)测工具,在公路工程中的应用日趋广泛。文中论述了探地雷达技术的基本原理和测试方法,并结合工程实例,阐述了探地雷达在公路路面厚度检测及其质量评价、路基下采空区等病害隐患探测,路基填土质量评价,以及公路隧道衬砌和挡土墙质量检测等方面的应用情况。实践表明,应用探地雷达技术,可以高效、准确地确定工程隐患位置及大小,定量评价工程质量,为公路工程设计施工和工程质量验收提供科学依据。

Ground Penetrating Radar Survey in Highway Construction

In recent years,highway construction was developing rapidly in China.Ground penetrating radar (GPR),as a new tool for high-resolution nondestructive testing (NDT),was used for highway engineering increasingly.The principle,method and technique of GPR for highway engineering were described.Some engineering examples of GPR survey for pavement thickness and its quality evaluation,exhausted area under roadbed,evaluation of filling quality,tunnel lining,thickness of bulkhead were expounded.The results of investigations show GPR technique is useful,accurate and high-efficiency for detecting the hidden trouble and evaluating engineering quality quantificationally,and the results of measure can give guidance to engineering design,construction and engineering acceptance for highway engineering.