Large Strain Consolidation Model for Land Subsidence
Publication: International Journal of Geomechanics
Volume 18, Issue 11
Abstract
This note presents a numerical model and investigation of one-dimensional large strain consolidation-induced land subsidence due to groundwater pumping. The model, called CLS1, employs the CS2 methodology and is applicable for settlement of a compressible soil layer due to a reduction in boundary pore pressure under constant overburden stress. Verification checks show excellent agreement with analytical solutions for local degree of consolidation through time. Several numeric examples are presented to highlight capabilities of the new model and emphasize the effect of soil constitutive relationships, soil self-weight, and variable groundwater pumping on consolidation-induced land subsidence. The examples indicate that failure to account for these aspects can yield significant errors in predictions of settlement through time.
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Acknowledgments
Financial support for this research was provided by the US National Science Foundation (NSF), Arlington, Virginia, under grant CMMI-1622781. Additionally, the first author was supported by the Department of Defense (DoD) Air Force Office of Scientific Research through the National Defense Science and Engineering Graduate Fellowship (NDSEG), 32 CFR 168a. This support is gratefully acknowledged. The opinions expressed in this technical note are solely those of the authors and are not necessarily consistent with the policies or opinions of the NSF or DoD.
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Information & Authors
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Published In
International Journal of Geomechanics
Volume 18 • Issue 11 • November 2018
Copyright
© 2018 American Society of Civil Engineers.
History
Received: Nov 8, 2017
Accepted: Apr 16, 2018
Published online: Aug 29, 2018
Published in print: Nov 1, 2018
Discussion open until: Jan 29, 2019
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