Deformation of surrounding environment caused by vacuum precompression and its prevention

Miao Dan; He Chushao

doi:10.20265/j.cnki.issn.1007-2993.2023-0847

Volume 39 Issue 2

Apr. 2025

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Miao Dan, He Chushao. Deformation of surrounding environment caused by vacuum precompression and its prevention[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(2): 264-270. doi: 10.20265/j.cnki.issn.1007-2993.2023-0847

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Miao Dan, He Chushao. Deformation of surrounding environment caused by vacuum precompression and its prevention[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(2): 264-270. doi: 10.20265/j.cnki.issn.1007-2993.2023-0847

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Deformation of surrounding environment caused by vacuum precompression and its prevention

doi: 10.20265/j.cnki.issn.1007-2993.2023-0847

Miao Dan^{1, 2
,},
He Chushao^{1, 2
,}

1.
Guangzhou Guangjian Construction Engineering Testing Center Co., Ltd., Guangzhou 510080, Guangdong, China
2.
Guangdong Engineering Technology Research Cencer of Building Health Monitoring and Security Early Warning, Guangzhou 510080, Guangdong, China

Received Date: 2023-11-07
Accepted Date: 2024-03-11
Rev Recd Date: 2024-01-31

Available Online: 2025-04-07

Publish Date: 2025-04-08

Abstract

Abstract

Vacuum preloading is a commonly used method for soft soil foundation treatment. To study the influence of vacuum preloading on surrounding soil and corresponding deformation prevention technology, a field test of vacuum preloading reinforced foundation was conducted. Through analysis of monitoring data, the deformation patterns of the surrounding environment were revealed, and the effectiveness of prevention measures was evaluated. Research results show that: (1) vacuum preloading caused a decrease in groundwater levels and pore water pressure in the surrounding area, leading to lateral displacement and settlement; (2) the impact range of vacuum preloading on the surrounding environment was found to be related to soil conditions; (3) in this project, a combination of sand piles and cement-soil mixing piles was adopted as a deformation prevention technology, effectively reducing both horizontal displacement and settlement around the reinforced area by approximately 40%.
- vacuum preloading,
- ground treatment,
- deformation prevention,
- pore water pressure,
- soft foundation monitoring

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References(11)

References

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