One-dimensional consolidation of multilayered aquifer systems with viscoelastic properties induced by time-dependent groundwater drawdown
- 25 October 2021
- journal article
- research article
- Published by Geological Society of London in Quarterly Journal of Engineering Geology and Hydrogeology
- Vol. 55 (2)
- https://doi.org/10.1144/qjegh2021-073
Abstract
Most analytical and semi-analytical models for pumping-induced land subsidence invoke the simplifying assumptions regarding characteristics of geomaterials, as well as the pattern of drawdown response to pumping. This paper presents an analytical solution for one-dimensional consolidation of the multilayered soil due to groundwater drawdown, in which viscoelastic property and time-dependent drawdown are taken into account. The presented solution is developed by using the boundary transformation techniques. The validity of the proposed solution is verified by comparing with a degenerated case for a single layer, as well as with the numerical solutions and experimental results for a two-layer system. The difference between the average consolidation degree U-p, defined by hydraulic head, and U-s, defined by total settlement, is discussed. Detailed parametric studies are conducted to reveal the effects of viscoelastic properties and drawdown patterns on the consolidation process. It is revealed that while the effect of different drawdown response patterns is significant during the early-intermediate stages of consolidation, the viscoelastic properties may have a more dominant influence on long-term consolidation behaviour, depending on the values of the material parameters, which are reflected in both the deformation process of soil layers and the dissipation of excess pore-water pressure.Keywords
Funding Information
- National Natural Science Foundation of China (41602284)
This publication has 33 references indexed in Scilit:
- One-dimensional consolidation of layered soils with exponentially time-growing drainage boundariesComputers and Geotechnics, 2013
- Analytical Solution for One-Dimensional Consolidation of Soil Layer Induced by Time-Dependent Groundwater DrawdownApplied Mechanics and Materials, 2013
- Revisão: Subsidência regional associada à extracção de água subterrâneaHydrogeology Journal, 2011
- Effects of human activities and urbanization on groundwater environments: An example from the aquifer system of Tokyo and the surrounding areaScience of The Total Environment, 2009
- Land subsidence in Bangkok, ThailandEngineering Geology, 2006
- Review on current status and challenging issues of land subsidence in ChinaEngineering Geology, 2004
- A nonlinear elastic solution for 1-D subsidence due to aquifer storage and recovery applicationsHydrogeology Journal, 2003
- A study on one‐dimensional consolidation of layered systemsInternational Journal for Numerical and Analytical Methods in Geomechanics, 1992
- Land subsidence caused by ground water withdrawal in urban areasGeoJournal, 1985
- Algorithm 368: Numerical inversion of Laplace transforms [D5]Communications of the ACM, 1970