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在隧道施工过程中对掌子面前方一定区域内的地质情况进行超前预报是保证隧道施工安全的关键。文章首先介绍了地质雷达在公路隧道超前地质预报中的基本内容及工作目的;其次,概述了地质雷达的基本工作原理、使用方法及参数确定,并通过工程实例,对现场测试结果及开挖后的实际围岩情况进行对比分析,总结其规律及特点。最终表明,采用地质雷达对公路隧道进行超前地质预报,能有效保障隧道施工的安全,指导隧道施工的顺利进行。
Predicting the geological conditions in a certain area in front of the face during tunnel construction is the key to ensure the construction safety of the tunnel. The article firstly introduces the basic content and purpose of GPR in advanced geological forecast of highway tunnel. Secondly, it summarizes the basic working principle, using method and parameter of GPR, and through the engineering example, the field test results and the excavation The actual situation of the surrounding rock for comparative analysis, summed up its laws and characteristics. Finally, it shows that the use of geological radar to advance the geological forecast of highway tunnel can effectively guarantee the safety of tunnel construction and guide the smooth progress of tunnel construction.