SIR30地质雷达在公路隧道超前地质预报中的应用

he karst landform develops in Guizhou province，it is easy to encounter unfavorable geological disaster during construction of tunnel, endanger construction safety and influence construction quality. Using SIR30 geological radar to explore the surrounding rock in front of tunnel face, and forecast ahead rock conditions timely and accurately, and provide the treatment basis for the contractor. This article relies on a few tunnel of Zi yun - Wang mo Expressway, explore the application of SIR30 geological radar in advance prediction of tunnel. First of all，introduce the component connection and parameter setting of Radar, and then collect the data in the field detection, finally analyze the geological radar waveform diagram of the feedback, thestudy found that SIR30 geological radar can accurately detect the unfavorable geological condition of the surrounding rock, and has achieved good application in the geological prediction of the tunnel, and it provide experiences for the similar engineering geological forecast.