A study on one-dimensional consolidation of layered structured aquitard soils in a leakage system

Hu, Anfeng; Xia, Changqing; Wu, Hao; Xie, Kang; Yan, Ling-Han

doi:10.1080/1064119x.2016.1164264

Cited by 5 publications

(6 citation statements)

References 11 publications

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“…where m bw and m s are the mass of bound water and soil particles, respectively, g; ρ bw and ρ s are the density of bound water and soil particles, respectively, g/cm 3 ; and V bw and V s are the total volume of bound water and soil particles, respectively, cm 3 . According to Equation (1), the total volume of bound water can be expressed as…”

Section: Calculation Methods Of the Effective Void Ratio Of Cohesive ...mentioning

confidence: 99%

“…ρ bw and ρ s represent the density of bound water and soil particles, respectively, kg/cm 3 . Wang et al showed that average density of strong bound water was about 1.3 g/cm 3 and that of loose bound water was about 1.16 g/cm 3 [34,35]. For the convenience of research, the ρ bw in this paper is taken as 1.20 g/cm 3 .…”

Section: Calculation Methods Of the Effective Void Ratio Of Cohesive ...mentioning

confidence: 99%

“…Wang et al showed that average density of strong bound water was about 1.3 g/cm 3 and that of loose bound water was about 1.16 g/cm 3 [34,35]. For the convenience of research, the ρ bw in this paper is taken as 1.20 g/cm 3 . In summary, the ineffective void ratio of a particular soil can be considered a constant.…”

Section: Calculation Methods Of the Effective Void Ratio Of Cohesive ...mentioning

confidence: 99%

“…How to improve the accuracy of consolidation settlement calculation of soft soil foundation has attracted much attention in geotechnical engineering field. In 1925, Terzaghi et al proposed the one-dimensional consolidation theory and has been widely used [1][2][3][4][5][6]. However, Terzaghi's onedimensional consolidation theory is based on a series of assumptions, and the nonlinear variation of the permeability coefficient in the consolidation process is simplified.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on Calculation Method of Permeability Coefficient in the Consolidation Process of Cohesive Soil

et al. 2022

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In order to study the permeability characteristics of cohesive soil in the consolidation process more accurately, in this work, the pores occupied by the combined water were defined as invalid pores, and the effective pores and ineffective pores were decoupled to study the relationship between effective pores and permeability coefficient. The widely used empirical formulas of the permeability coefficient were modified, and the empirical formulas of the permeability coefficient suitable for the consolidation process of cohesive soil were obtained. Combined with the e − lg σ relationships of normally consolidated soil, underconsolidated soil, and overconsolidated soil, the formulas of permeability coefficient, which considering the influence of initial consolidation state and consolidation stress, in the consolidation process of cohesive soil, were proposed. Finally, the rationality of the new formulas proposed in this paper was analyzed by indoor consolidation-permeability test and existing research. The results showed that the permeability coefficient of cohesive soil in the consolidation process predicted by the new formulas were more consistent with the measured average value. This study possesses practical engineering significance to solve the problem of foundation consolidation settlement.

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Section: Calculation Methods Of the Effective Void Ratio Of Cohesive ...mentioning

confidence: 99%

Section: Calculation Methods Of the Effective Void Ratio Of Cohesive ...mentioning

confidence: 99%

Section: Calculation Methods Of the Effective Void Ratio Of Cohesive ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation on Calculation Method of Permeability Coefficient in the Consolidation Process of Cohesive Soil

et al. 2022

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“…Li et al [20] derived an analytical solution to characterize the drawdown variation in an aquifer system taking into account the large strain behavior. Hu et al [21] studied the consolidation behavior in a layered aquifer system taking into consideration the structured characteristics of the aquitard. In all of these studies, the aquitard soil was simulated using a linear elastic model for developing simple analytical solutions.…”

Section: Introductionmentioning

confidence: 99%

A One-Dimensional Fractional-Derivative Viscoelastic Model for the Aquitard Consolidation of an Aquifer System

Huang

2019

Geofluids

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Land subsidence resulting from the withdrawal of groundwater is one of the problems of major importance to geosciences and geomechanics. In order to analyze the phenomena of land subsidence, this study attempts to constitute a more reliable prediction model to simulate the consolidation process of the aquifer system under the drawdown of groundwater. A fractional-derivative viscoelastic model is introduced to characterize the rheological properties of the aquitard, and the equation governing the consolidation process is established on the basis of the one-dimensional consolidation theory. The semianalytical solutions for the pore-water pressure, the settlement of aquitard, and the degree of consolidation are deduced using both finite sine transform and Laplace transform. Then, the comparisons of two special cases are performed to validate the correctness of the proposed model. The variations in the degree of consolidation and settlement of the aquitard are simulated to analyze the consolidation behavior of the aquifer system, and the influences of model parameters and the drawdown speed of groundwater are investigated.

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Rheological consolidation solutions for multi-layered natural structured soft clays based on a nonparallel isotache model

et al. 2023

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A study on one-dimensional consolidation of layered structured aquitard soils in a leakage system

Cited by 5 publications

References 11 publications

Investigation on Calculation Method of Permeability Coefficient in the Consolidation Process of Cohesive Soil

Investigation on Calculation Method of Permeability Coefficient in the Consolidation Process of Cohesive Soil

A One-Dimensional Fractional-Derivative Viscoelastic Model for the Aquitard Consolidation of an Aquifer System

Rheological consolidation solutions for multi-layered natural structured soft clays based on a nonparallel isotache model

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