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地质雷达作为公路隧道超前地质预报的手段之一,对预报掌子面前方岩体的微细结构能起到很重要的作用,同时可以作为隧道勘察结果的进一步认识和补充。文章简要介绍了地质雷达工作的电磁波理论基础,并以新扎沟隧道为例,利用SIR—20地质雷达并结合工程地质方法对节理破碎带和地下水成功地作出了预测,这可以减少隧道施工的盲目性,进而有效地防止工程事故,加快工程进度以及保证工程质量。
Geological radar, as one of the means of advanced geological prediction of highway tunnel, plays an important role in predicting the fine structure of rock mass in front of the face of the tunnel and can be further recognized and supplemented as the result of tunnel investigation. This paper briefly introduces the electromagnetic theory of ground-based radar and takes the Xinzhaigou tunnel as an example, successfully predicts the jointed broken zone and groundwater by using the SIR-20 geological radar combined with the engineering geology method, which can reduce the tunnel construction Blindness, and then effectively prevent engineering accidents, speed up the progress of the project and ensure the quality of the project.