超前地质预报方法在西延高铁岩溶隧道中的应用  

Application of advanced geological prediction method in karst tunnel of Xiyan high-speed railway

作　　者：张文康 Zhang Wenkang(Shaanxi Railway Engineering Survey Co.,Ltd.,Xi’an 710003,China)

机构地区：[1]陕西铁道工程勘察有限公司,陕西西安710003

出　　处：《山西建筑》2022年第14期157-159,162,共4页Shanxi Architecture

摘　　要：由于前期的地质勘察资料存在偏差,在隧道施工开挖期间,要准确地预知隧道前方围岩的地质情况,超前地质预报方法已经成为国际公认的隧道预报常规手段,其中TSP法和地质雷达技术方法是最成熟、最直接的预报方法,然而物探的多解性,人为因素等多种原因往往造成岩溶隧道预报准确率不高,通过对TSP和地质雷达法的工艺创新改进,经过典型工程实例验证,不仅提高了预报准确率,正确指导了隧道施工方案,还最大化的创造了经济价值。Due to the deviation of the previous geological survey data, during the tunnel construction and excavation, it is necessary to accurately predict the geological conditions of the surrounding rock in front of the tunnel. The advanced geological forecast method has become an internationally recognized conventional means of tunnel forecast, among which TSP method and ground penetrating radar(GPR) technology are the most mature and direct forecast methods. However, many reasons, such as multi-solution of geophysical exploration and human factors, often lead to low accuracy of karst tunnel forecast. Through the process innovation and improvement of TSP and GPR, verified by typical engineering examples, it not only improves the work efficiency and forecast accuracy, correctly guides the tunnel construction scheme, but also maximizes the economic value.

关 键 词：超前地质预报 TSP法 地质雷达法 岩溶隧道 物探的多解性 

分 类 号：U456.33[建筑科学—桥梁与隧道工程]