地质雷达在通车隧道围岩探测中的应用

The Application of GPR to Detect Traffic in Surrounding Rock Tunnel

以昆禄二级公路大普吉隧道为工程背景,针对该通车隧道,给出地质雷达在无损检测应用中的工作方法,主要介绍了地质雷达探测的工作原理,包括测线布置、采集参数设定、现场检测和后期资料处理解释。因该隧道通车出现病害,通车前未使用地质雷达探测,而地质雷达具有方便、成本低、精度高的特点,所以通车后选择运用21-002188便携式探地雷达对该隧道围岩进行扫描分析探测。通过雷达测线剖面了解隧道围岩的含水分布、富水区和围岩松散与破碎等不良地质病害隐患,并通过几幅典型雷达图像分析了不同异常情况在雷达图像上的反映。为解决大普吉隧道安全隐患提供及时准确的数据资料。

Lu Kun secondary roads with large Phuket tunnel engineering background,aiming at the opening of the tunnel,describes the working principle of the geological radar detection,given the geological radar method in nondestructive testing applications,including measuring line layout,acquisition parameters set,on-site testing and post-data processing and interpretation.The tunnel opened to traffic due to the emergence of disease,not using geological radar detection before the opening,due to geological radar has the characteristics of convenient,low cost,high precision,so after choosing 21-002188 portable ground penetrating radar（GPR）is used to the surrounding rock scanning analysis detection.By radar line section to understand the water distribution of tunnel surrounding rock,rich water and loose and broken surrounding rock geological diseases hidden trouble,and through the pieces of a typical radar image analysis of the different anomalies reflect on the radar image.In order to solve the big phuket tunnel safety hidden trouble to provide timely and accurate data.