宜万线路基岩溶地质雷达快速探测试验与应用  

Experiment and Application of Ground Penetrating Radar Rapid Detection for Subgrade Karst of Yiwan Railway Line

作　　者：王鹏越 郝丽生 刘杰[3] 

机构地区：[1]北京博安瑞达检测技术有限公司,北京100083 [2]中矿华安能源科技(北京)有限公司,北京100083 [3]中国铁道科学研究院铁道建筑研究所,北京100081

出　　处：《铁道建筑》2017年第8期94-96,共3页Railway Engineering

摘　　要：岩溶引起的路基塌陷已成为威胁我国岩溶地区铁路安全运营的地质灾害之一。本文首先介绍了地质雷达法的探测原理,然后对3种雷达测试方案的现场测试效果进行了分析。结果表明:天线横置于轨道中心及轨道外侧时可以有效减弱铁路沿线高压接触网的电磁干扰,滑动高通水平滤波对轨枕干扰信号和水平震荡信号的抑制效果最佳,能够明显改善数据的信噪比。根据试验确定的最优天线悬挂方案,对宜万线上行线K1330+000—K1332+000段的路基岩溶进行了探测,效果良好。Subgrade collapse caused by karst has become one of the main geological hazards threatening railw aysafety operation in karst areas of C hina. T he detection principle of ground penetrating radar （ GPR） was introducedand the f ield test results of three kinds of radar test schemes w ere analyzed in this paper . The results show that theelectromagnetic interference of high voltage catenary along the railw ay line can be effectively reduced when theantenna is transversely placed at the track center and outside the track. The sliding high pass horizontal f ilter is theeffective w ay to restrain the sleeper interference signal and the horizontal oscillation signal, w hich can obviouslyimprove the signal- to- noise ratio of the data. The optimal antenna suspension scheme was determined by experimentand the subgrade karst of uplink K1330 ＋ 000 K1332 ＋ 000 section in Yiw an railw ay line was detected by GPR,which achieved good results.

关 键 词：铁路路基 地质雷达 快速探测 路基病害 岩溶 

分 类 号：U213.14[交通运输工程—道路与铁道工程]