地质雷达检测基坑开挖引起的地基病害  

Application of GPR to detect foundation defect caused by excavation

作　　者：何亮[1] 杨放[1] 王旭东[1] 徐建龙[1] 曹华[1] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2007年第5期21-24,共4页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50278042);江苏省高校自然科学研究计划资助项目(03KJB560044);南京市建设系统科研项目

摘　　要：作为一种新兴的地球物理勘探方法,地质雷达在岩土工程中的应用日趋广泛.结合工程实例,开展了地质雷达检测基坑开挖引起的地基病害的应用研究.根据现场检测得到的雷达测线剖面图和单道波形图,对基坑开挖引起的土体疏松和脱空等典型地基病害进行了图像解释,并采用现场静力触探试验进行了对比验证.结果表明,地质雷达具有快速确定地基病害位置的能力,是一种较为理想的检测基坑开挖引起的地基病害的有效手段.Ground penetrating radar （GPR） , as a new geophysical survey eguipment, is applied in geotechnical engineering increasingly. Some engineering cases of GPR survey for detecting foundation defect caused by excavation were introduced. Based on analyzing the profile of GPR survey-line and the image of single-waveform, GPR images of the disturbed soil and soil slab were interpreted, the SPT was also used to testify the result of GPR. Engineering practice proved that GPR is a high-efficiency technique to position the foundation defects.

关 键 词：地质雷达 基坑开挖 地基病害 静力触探 

分 类 号：TU413[建筑科学—岩土工程]