长大高速公路隧道地质超前预报现场应用

Site Application of Geological Advanced Prediction of Tunnel for Changda Expressway

隧道施工风险性较高,隧道超前地质预报是隧道施工过程中必须开展的一项工作,可有效探测掌子面前方的不良地质,根据探测结果提前预警,避免地质灾害的发生。以江西某公路隧道为研究对象,通过地质雷达和TSP203两种方法开展隧道超前地质预报工作,与现场开挖对比分析,地质雷达和TSP203可有效识别掌子面前方的不良地质,具有较高的准确性,为隧道施工提供指导。

The tunnel construction risk is higher. The geological advanced prediction of tunnel is a piece of work that must be performed during the period of tunnel construction,which can effectively detect the unfavorable geology in front of the tunnel face. Warn in advance can be provided according to the detection result to avoid the occurrence of geological disaster. Taking a highway tunnel in Jiangxi as the research object,the geological advanced prediction work for the tunnel is performed by two kinds of methods like geological radar and TSP203.The contrastive analysis of site excavation is made. The geological radar and TSP203 can effectively identify the unfavorable geology in front of the tunnel face,with higher correctness,which can provide guidance for the tunnel construction.