Land subsidence caused by internal soil erosion owing to pumping confined aquifer groundwater during the deep foundation construction in Shanghai

Land subsidence is presented in many factors in different areas with urbanization. Internal soil erosion, owing to pumping confined groundwater during the deep foundation pit construction, has contributed to land subsidence. Four governing equations are presented to describe the process of internal...

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Bibliographic Details
Published in:Natural hazards (Dordrecht) 2013-10, Vol.69 (1), p.473-489
Main Authors: Zhang, X.-S., Wang, J.-X., Wong, H., Leo, C.-J., Liu, Q., Tang, Y.-Q., Yan, X.-L., Sun, W.-H., Huang, Z.-Q., Hao, X.-H.
Format: Article
Language:English
Subjects:
Aquifers
Civil Engineering
Confined aquifers
Confined groundwater
Construction
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Engineering
Engineering and environment geology. Geothermics
Environmental Management
Exact sciences and technology
Foundations
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Groundwater
Hydraulic gradient
Hydrogeology
Land
Land subsidence
Land use
Mathematical analysis
Mathematical models
Natural Hazards
Natural hazards: prediction, damages, etc
Original Paper
Soil erosion
Subsidence
Urbanization
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Summary:Land subsidence is presented in many factors in different areas with urbanization. Internal soil erosion, owing to pumping confined groundwater during the deep foundation pit construction, has contributed to land subsidence. Four governing equations are presented to describe the process of internal soil erosion based on the mathematical–physical model. The finite element computation results, based on practical deep foundation pit engineering consisted of 8 layers of soil of Shanghai area, demonstrate that internal soil erosion will cause the increment of land subsidence and deformation and is related to the hydraulic gradient and the characters of the soils.
ISSN:0921-030X
1573-0840
DOI:10.1007/s11069-013-0718-7