地质雷达在隧道衬砌检测中应用

地质雷达在隧道衬砌检测中的应用

摘要：采用新奥法施工的山岭隧道中，围岩本身和初期支护一起作为隧道的主要受力结构，二次混凝土衬砌则主要是起安全储备作用，因此初期支护背后有无脱空或背后空洞的位置形态以及二次衬砌混凝土的实际厚度对于隧道的安全和质量起着至关重要的作用。本文通过地质雷达在蔡大岭隧道初期支护及二次衬砌检测中的应用，介绍了地质雷达的原理、方法、参数的设置、及雷达剖面图的分析，结果表明地质雷达在检测隧道衬砌中的质量缺陷具有定位准确，快速，无损等优点。

关键词：隧道；衬砌；地质雷达；检测

the application of the geological radar in tunnel lining detection

abstract: it is much important that concerning over detecting the thickness of primary lining concrete, the position and shape of cavity behind tunnel lining, for the primary bearing carrier are primary shotcrete and rock bolts, and the secondary concrete lining acts as safety margin, in tunnels constructed with mine tunneling method. it is convenient for taking measures by detecting primary lining, to achieve effective quality-control of construction. this paper mainly introduces the application of radar method in detecting primary support and secondary concrete lining in