土工基础

土工基础 ›› 2022, Vol. 36 ›› Issue (5): 782-786.

• 测试技术 • 上一篇    下一篇

深厚软土地基深大基坑安全监测

龚丽飞1,2，邵 帅2，姚雨萌2   

  1. (1.南京水利科学研究院，南京 210026；2.南京瑞迪建设科技有限公司，南京 210026)
  • 收稿日期:2021-03-19 修回日期:2021-03-29 出版日期:2022-10-30 发布日期:2022-10-27
  • 作者简介:龚丽飞(1981-)，男，高级工程师，硕士，研究方向为水利、水运及岩土工程设计、监测。

Safety Monitoring of Deep Foundation Excavation in Thick Soft Soils

GONG Lifei1,2, SHAO Shuai2， YAO Yumeng2   

  1. (1.Nanjing Hydraulic Research Institute, Nanjing 210026；2.Nanjing R&D Technical Group Co. Ltd., Nanjing 210026)
  • Received:2021-03-19 Revised:2021-03-29 Online:2022-10-30 Published:2022-10-27

摘要： 基坑工程是岩土工程中最为复杂的工程之一，水文地质、气象、周边环境、支护结构型式、开挖步骤等均可对基坑工程安全生产造成很大影响，往往产生重大的财产损失和强烈的社会影响，因此，基坑监测成为基坑开挖施工过程安全动态监控的最主要手段。以珠西综合交通枢纽江门站配套设施工程江门大道基坑开挖施工监测为例，采用多种支护型式，结合基坑工程施工监测、基坑变形控制进行分析和探讨，累计变形量和变形速率指标均超设计控制值前提下，施工过程中基坑风险得到有效控制，为该深厚软土地区类似工程提供借鉴。

关键词: 基坑工程, 监测, 软土地基, 基坑安全

Abstract: In geotechnical engineering, the deep excavation is one of the most complicated engineering which have the complicated factors and conditions. The hydrogeology, meteorology, surrounding environment, supporting structure type, excavation consequences, etc. could all have a potential great impact on the safety of foundation excavations. Even, there might be a potential significant property loss and strong social impact, the safety monitoring of the deep excavation has become the most important means of the real time monitoring of the safety during the excavation. This paper presents a construction monitoring of the deep excavation of Jiangmen Avenue in the Jiangmen Station supporting facility project of the Zhuxi Comprehensive Transportation Hub. A variety of support types and the deep excavation construction monitoring and foundation deformation control are analyzed and discussed in the paper. Under the condition of the cumulative deformation and deformation rate index exceeded the design control value, the risk of the deep excavation during the construction process was effectively controlled, which provides a reference for the similar projects in this deep soft soil area.

Key words: Deep Excavation Engineering, Monitoring, Soft Soils, Excavation Safety

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