地质雷达在江苏宜兴段高速公路边坡勘测中的应用

近年来,我国公路建设发展迅速,公路基础建设不断深入,各种边坡的稳定性成为基础工程建设中的一大难题。边坡设计过程中一个很重要的依据就是工程地质条件,对边坡工程地质结构的调查显得尤为重要。但由于客观条件所限,在地质条件复杂、施工条件恶劣情况下要得到较为确切的工程地质资料是困难的。使用常规地质钻探手段往往施工困难,工程投资大,控制范围有限。探地雷达作为一种新型的高分辨无损探测工具,在公路工程中的应用日趋广泛。论文在阐述地质雷达方法原理和地球物理特征的基础上,以江苏宜兴段高速公路边坡工程地质勘测为例,介绍了地质雷达技术在边坡工程地质勘测中的应用。

Application of GPR in the slope engineering geologic survey for expressway of Yixing section, Jiangsu Provine

In recent years,highway construction has developed rapidly in China.The road foundation engineering construction is unceasingly thorough,and each slope stability becomes a big difficult problem in the foundation engineering construction.One of the important basis of slope design process is the engineering geologic condition,and the investigation of slope engineering geologic structure is especially important.But to the limit of the external condition,it is difficult to get accurate engineering geologic data in the complex geological condition or the bad construction condition.Using routine geologic drilling method often constructs difficultly with the problem of great investment and limited control area.Ground penetrating radar(GPR),a new device for high-resolution nondestructive testing,is used in highway engineering increasingly.On the basis of elaborating the GPR method principle and the earth physics characteristic,taking the slope engineering geologic survey of the Jiangsu Yixing segment expressway as an example,application of the GPR technique in the slope engineering geologic survey is introduced.