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One-Dimensional Consolidation Of Aquitard Considering Non-Darcy Flow
Abstract There sometimes exits the notable difference between the solution of one-dimension consolidation of aquitard based on Terzaghi&s theory and the field settlement observations, which can be in a certain extent ascribed to that the flow of pore water in the aquitard may not obey Darcy&s law. In order to improve the precision of consolidation computation, the non-Darcy flow equation described by the power function for the lower velocity of flow and the linear function for the higher velocity of flow is introduced to modify Terzaghi&s one-dimensional consolidation equation, and the presented equation is generalized to take account of the consolidation case due to the falling of the water head in the confined aquifer. The numerical analysis is performed by using the finite volume method. The effects of the parameters of non-Darcy flow on the consolidation process are investigated. The numerical results indicate that the non-Darcy flow delays the dissipation of pore water pressure in the aquitard; thereby the consolidation time of aquitard is longer than that of the solution based on Terzaghi&s theory.
One-Dimensional Consolidation Of Aquitard Considering Non-Darcy Flow
Abstract There sometimes exits the notable difference between the solution of one-dimension consolidation of aquitard based on Terzaghi&s theory and the field settlement observations, which can be in a certain extent ascribed to that the flow of pore water in the aquitard may not obey Darcy&s law. In order to improve the precision of consolidation computation, the non-Darcy flow equation described by the power function for the lower velocity of flow and the linear function for the higher velocity of flow is introduced to modify Terzaghi&s one-dimensional consolidation equation, and the presented equation is generalized to take account of the consolidation case due to the falling of the water head in the confined aquifer. The numerical analysis is performed by using the finite volume method. The effects of the parameters of non-Darcy flow on the consolidation process are investigated. The numerical results indicate that the non-Darcy flow delays the dissipation of pore water pressure in the aquitard; thereby the consolidation time of aquitard is longer than that of the solution based on Terzaghi&s theory.
One-Dimensional Consolidation Of Aquitard Considering Non-Darcy Flow
Liu, Zhong-Yu (author) / Yue, Jin-Chao (author) / Sun, Li-Yun (author)
Advances in Environmental Geotechnics ; 430-434
2010-01-01
5 pages
Article/Chapter (Book)
Electronic Resource
English
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