测斜技术在大型水利工程深基坑中的应用

Application of oblique monitoring technology in deep foundation pit of large-sized hydraulic engineering

结合大型水利工程实例,介绍了基坑监测工程的监测内容和监测仪器的布设,重点介绍了测斜技术在基坑开挖过程中的作用。根据测斜监测数据和控制标准对基坑边坡进行安全评价,指导基坑设计和施工。在基坑开挖过程中,监测组成功报警数次。施工单位采取应急措施后,保证了基坑安全,为今后大型水利工程的深基坑设计和施工积累了经验。

By analyzing practical example of large-sized hydraulic engineering, monitoring content and instruments deployment in foundation pit monitoring engineering are discussed in the paper, especially the effect of oblique monitoring technology in foundation pit excavation. According to oblique monitoring date and predetermined control standards, safety evaluation of slope of foundation pit is carried out, which gives guidance to foundation pit design and excavation. During the foundation pit excavation, monitoring team puts forward successfully alarming several times. Construction units takes emergency measures to ensure the safety of foundation pit. This paper accumulates experience for deep foundation pit de-sign and excavation of large-sized hydraulic engineering.