摘要
结合北京某地铁深基坑开挖监测实例,介绍了监测点的设计、监测仪器的现场安放、开挖过程中的实时监测频率、监测预警值的确定及监测预报等工作内容。在基坑开挖过程中监测与施工密切配合,根据现场施工需要及时增加监测频率和时间,同时注重对异常数据进行综合分析,及时与施工单位沟通,当监测值接近警戒值时立即向施工单位发布报警信息,并积极参与讨论,提出处理方案,正确及时地指导施工,有效地保证了施工现场和周围环境的安全。
Combined with the monitoring example of a deep excavation in Beijing, the design and the instrument layout were introduced. The working content of the monitoring frequency, the values of alertness and the displacement prediction were presented. During deep excavation, the frequency and time were added when the demands were needed. The unusual data were analyzed. The dangerous forecast would be made if the data were close to the values of the alertness. To ensure the effective excavation the pit and the environmental safety, active debates were carried out and suggestions were suggested.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2006年第B11期1853-1857,共5页
Chinese Journal of Geotechnical Engineering
基金
北京市教委基金资助项目(4700001401506)
关键词
深基坑开挖
监测
警戒值
deep excavation
monitoring
value of alertness
