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

X.-S. Zhang (), J.-X. Wang, H. Wong, C.-J. Leo, Qiujiang Liu, Y.-Q. Tang, X.-L. Yan, W.-H. Sun, Z.-Q. Huang and X.-H. Hao

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2013, vol. 69, issue 1, 473-489

Abstract: 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. Copyright Springer Science+Business Media Dordrecht 2013

Keywords: Land subsidence; Internal erosion; Confined aquifer; Deep foundation (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1007/s11069-013-0718-7

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