GPR技术在北同蒲线路基塌陷探测中的应用  

Application of GPR Technology in Subgrade Subsidence Detection of Beitongpu Railway

作　　者：胡在良 刘欢 杜翠 HU Zailiang;LIU Huan;DU Cui(China Academy of Railway Sciences Corporation Limited,Beijing Tieke Engineering Inspection Co.Ltd.,Beijing 100081,China;Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;School of Geophysics and Information Technology,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中国铁道科学研究院集团有限公司铁科检测有限公司,北京100081 [2]中国铁道科学研究院集团有限公司铁道建筑研究所,北京100081 [3]中国地质大学(北京)地球物理与信息技术学院,北京100083

出　　处：《铁道建筑》2022年第7期142-144,共3页Railway Engineering

基　　金：中国铁道科学研究院集团有限公司基金(2019YJ183,2019YJ060);国能集团科技创新项目(GJNY-20-231)。

摘　　要：针对北同蒲线铁路路基出现不同程度的塌陷病害已对铁路行车构成潜在安全隐患的问题,利用400 MHz探地雷达对北同蒲线四处塌陷点进行了探测。结果表明:探地雷达方法可以探测到2 m范围内的路基塌陷分布,具有分辨率高、快速连续探测、能够及时反馈现场情况等优点。结合地质资料从雷达图像上查清了塌陷的具体里程位置并分析了产生塌陷的原因。In view of the problem that the subgrade of Beitongpu railway has subsided in varying degrees,which has posed potential safety hazards to railway traffic,four subsidence points of Beitongpu railway were detected by using400 MHz GPR. The results show that the GPR method can detect the distribution of subgrade subsidence within2 meters,and has the advantages of high resolution,rapid and continuous detection,and timely feedback of site conditions. Combined with geological data,the specific mileage position of the subsidence is found out from the radar image,and the cause of the subsidence is analyzed.

关 键 词：有砟铁路 路基塌陷 GPR技术 病害探测 路基抢险 

分 类 号：U213.1[交通运输工程—道路与铁道工程]