探地雷达在路基勘查中的应用

Application of GPR in the Exploration of Road Base

高速公路是国家发展的命脉,随着高速公路使用年限的增加,各种路基病害也日渐显现。传统的钻探取芯检测方法虽能达到检测的目的,但是检测不全面而且对道路破坏性大;探地雷达方法的引入,为路基的无损探测提供了有利保障,并且大大提高了探测效率。文中从探地雷达的原理出发,探讨了探地雷达识别路基病害的影响因素,通过对常见路基病害形成原因及其地球物理特征的详细分析,总结了路基病害的探地雷达图像特征。并通过某段高速公路的探测实例进行了应用研究,确定了路基病害的成因并圈定了其分布范围。

Expressway is lifeblood of the national development, along with the increasing of service life, all kinds of roadbed disease has been increasingly appeared. The traditional drilling core detection method can achieve the purpose of detection, but the detection is not comprehensive and destructive to the road. The introduction of ground penetrating radar method provides guarantee for the nondestructive detection of the roadbed, and greatly improves the detection efficiency. This article from the principle of ground penetrating radar sets out, the influencing factors of ground penetrating radar recognizing roadbed disease are discussed. Through detailed analysis of formation reason and geophysical characteristics of the common diseases of roadbed, the characteristics of radar images of roadbed disease exploration are summarized. The application study is made through the detection of the example of a section of highway, the causes are identified and the scope of the distribution of roadbed diseases is cycled.