地质雷达在堤防工程混凝土防渗墙连续性检测中的应用  

Application of Ground Penetrating Radar for Continuity Detection in Concrete CutoffWall of Embankment Engineering

作　　者：徐安 汪洋 王思腾 XU An;WANG Yang;WANG Siteng(River and Lake Protection and Construction Operation Safety Center of Changjiang Water Resources Commission,Wuhan 430010,China)

机构地区：[1]长江水利委员会河湖保护与建设运行安全中心,湖北武汉430010

出　　处：《长江技术经济》2025年第2期82-86,92,共6页Technology and Economy of Changjiang

摘　　要：地质雷达法检测是一种无损检测方法,能快速对堤坝防渗墙的施工情况进行全面的排查。为了解某蓄洪区堤防工程混凝土防渗墙施工质量,采用地质雷达法对防渗墙进行抽检,现场共检测了9个蓄洪垸的防渗墙,测线总长度为8957 m。结果表明:5个蓄洪垸的防渗墙未发现异常,4个蓄洪垸的防渗墙存在不密实现象。地质雷达法用于检测混凝土防渗墙的完整性和连续性是可行的,分析反射波的变化可有效判断防渗墙内的不密实或缺陷等质量问题;混凝土防渗墙的施工龄期和茂盛植被覆盖会使雷达反射信号减弱或产生较多杂波,影响检测结果。Ground penetrating radar(GPR),as a non-destructive method,can rapidly and comprehensively examine the construction of seepage walls in embankment engineering.To evaluate the construction quality of a concrete cutoffwall for the embankment in a flood storage area,we conducted GPR inspections on cutoffwalls across nine retention areas,covering a total survey length of 8957 meters.The results revealed that the cutoffwalls in five flood retention polds showed no structural anomalies,while four exhibited localized compaction deficiencies.Our findings confirmed that GPR reliably evaluates cutoff wall integrity and continuity through analysis of reflected waveform variations,which effectively identify compaction defects and other quality issues.However,concrete curing age and dense vegetation cover resulted in signal attenuation and increased clutters,affecting detection results.

关 键 词：地质雷达法 防渗墙 堤防工程 连续性检测 

分 类 号：TV522[水利工程—水利水电工程]