填方路基压实质量的电阻率成像诊断试验  

Experiment on Electrical Resistivity Imaging Diagnosis of Fill Subgrade Compaction Quality

作　　者：赵明阶[1] 何叶[1] 荣耀 黄卫东 

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]江西省交通工程质量监督站,江西南昌330008 [3]重庆市交通工程监理咨询有限责任公司,重庆400060

出　　处：《中国公路学报》2011年第3期16-21,共6页China Journal of Highway and Transport

基　　金：江西省交通科技项目(2010-15);重庆市科技攻关计划项目(CSTC2007AC6037)

摘　　要：为了更好地诊断路基质量状况,以山区道路建设中常见的土石混填路基为例,制作了路基内存在空洞、不均匀体以及不密实区3种不同病害的路基模型,采用电阻率成像检测法对病害模型进行了诊断测试,并对预设病害区域与电阻率成像诊断结果进行对比分析。结果表明:当路基内存在病害区域时,在路基的电阻率图像中会产生一个电阻率异常变化区域与之对应;预设病害区域的位置与电阻率异常变化区具有良好的对应关系,不同类型病害的电阻率异常变化幅度也不一致;采用电阻率成像诊断方法对路基压实质量进行检测和病害诊断是可行的。In order to better diagnose the quality of subgrade,taking soil-rock mixture subgrade which is commonly used in road construction of mountainous area as example,three disease models were made,in the model,there is an empty region,uneven filling material and non-dense area within the roadbed.Then electrical resistivity imaging detection method was used to diagnose these disease models,and comparative analysis of pre-set disease area and electrical resistivity imaging diagnosis result was carried out.Results show that when disease area exists in the subgrade,there will be a anomaly area of corresponding electrical resistivity in the electrical resistivity image of subgrade.Good correspondence between the location of pre-set disease area and anomaly area of electrical resistivity is found.Different types of diseases have different ranges of electrical resistivity anomalies.It proves that the electrical resistivity imaging diagnosis method for detection of subgrade compaction quality and disease diagnosis is feasible.

关 键 词：道路工程 压实质量 试验研究 电阻率 成像诊断 填方路基 

分 类 号：U416.1[交通运输工程—道路与铁道工程]