摘要
暗挖施工过程中因流沙、超挖等原因,会导致上方土层结构发生变化,产生土体不密实、空洞和路面与路基脱空等病害,留下地面塌陷的隐患。该论文以某暗挖施工电力隧道工程竖井底部流沙事故为讨论背景,介绍探地雷达检测方法的原理及其探测结果具有分辨率高、探测数据准确、无损检测等优点,同时探讨了探地雷达数据采集和影像处理技术在土层变化检测方面的应用,根据检测的结果,为暗挖施工产生的地面塌陷隐患检测提供了科学依据,为施工安全防护堤供参考数据,保证项目施工安全,降低安全事故的发生概率。
Due to quicksand and over-excavation in the construction of shallow-covered excavation,the structure of the upper soil layer will be changed,resulting in soil compactness,cavities in roadbed and other diseases,and leaving the hidden danger of ground collapse.This paper introduces the principle of GPR and the advantages on high precision,high resolution,non-destructive detection.At the same time,it also discusses the data acquisition and image processing technology of GPR in soil change detection,witch provides a scientific basis for the detection of hidden dangers of ground subsidence caused by underground excavation construction,provides reference data for construction safety protection,guarantees the construction safety of the project,and reduces the probability of safety accidents.
作者
杜朋卫
Du Pengwei(Beijing Tong Cheng Da Survey Co.,Ltd.,Beijing 100080,China)
出处
《城市勘测》
2019年第S01期183-187,共5页
Urban Geotechnical Investigation & Surveying
关键词
探地雷达
地下深施工
无损检测
隐患检测
GPR
Underground excavation
nondestructive detection
detection of hidden danger
