Practical Research on the Support Engineering of 10,000-Square-meter Deep Foundation Pit with Muddy Rheology in Coastal Tidal Flats

DOI

10.2991/978-94-6239-682-1_25How to use a DOI?

Keywords

Coastal Tidal flats; Rheological silt; A 10,000-square-meter deep foundation pit; Support construction

Abstract

To overcome the technical challenges of “high deformation risk, strong environmental sensitivity, and difficult construction” in the multi-megapascal deep foundation pits within the flowable silt strata of coastal tidal flats, based on the Ningde Lithium Battery Churuiwan Park Comprehensive Building Project, and considering the characteristics of the thick 15-30m flowable silt layer in the site, such as “high water content, low bearing capacity, strong disturbance sensitivity”, and significant tidal influence, through the analysis of engineering geological characteristics, the composite support technology of slope excavation, grouting retaining piles, internal supports, and three-axis cement mixing pile water-stop curtain was adopted. The guiding casing and real-time inclinometer control deviation technology were utilized to form an integrated construction technology system of “dynamic precipitation against tides, layered and segmented excavation, and full-dimensional monitoring feedback”. The practice has shown that this system effectively solved the problems of high instability risk of deep foundation pit support in the flowable silt layer and the difficulty in controlling the deformation of surrounding sensitive facilities. It provided reliable technical support and practical examples for similar projects in the coastal tidal flat areas of China.

Copyright

© 2026 The Author(s)

Open Access

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TY  - CONF
AU  - Erdong Wang
AU  - Wenqi Hu
AU  - Xiang Yan
AU  - Yafei Feng
AU  - Zhaohai Shen
AU  - He Li
PY  - 2026
DA  - 2026/06/30
TI  - Practical Research on the Support Engineering of 10,000-Square-meter Deep Foundation Pit with Muddy Rheology in Coastal Tidal Flats
BT  - Proceedings of the 2025 7th International Conference on Civil Architecture and Urban Engineering (ICCAUE 2025)
PB  - Atlantis Press
SP  - 257
EP  - 266
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6239-682-1_25
DO  - 10.2991/978-94-6239-682-1_25
ID  - Wang2026
ER  -