3-Dimensional Stochastic Seepage Analysis of a Yangtze River Embankment

Abstract

Three-dimensional stochastic simulation was performed to investigate the complexity of the seepage field of an embankment. Three-dimensional anisotropic heterogeneous steady state random seepage finite element model was developed. The material input data were derived from a statistical analysis of strata soil characteristics and geological columns. The Kolmogorov-Smirnov test was used to validate the hypothesis that the Gaussian probability distribution is applicable to the random permeability tensors. A stochastic boundary condition, the random variation of upstream and downstream water level, was taken into account in the three-dimensional finite element modelling. Furthermore, the functions of sheet-pile breakwater and catchwater were also incorporated as turbulent sources. This case, together with the variability of soil permeability, has been analyzed to investigate their influence on the hydraulic potential distributed and the random evolution of stochastic seepage field. Results from stochastic analyses have also been compared against those of deterministic analyses. The insights gained in this study suggest it is necessary, feasible, and practical to employ stochastic studies in seepage field problems. The method provides a more comprehensive stochastic algorithm than conventional ones to characterize and analyze three-dimensional random seepage field problems.

Analysis of the evolution pattern and causes of downstream gigantic hydraulic projects

“…The evolution behaviors are obviously affected by the existing projects (Harmar et al 2005;Anthony 2015;Wang 2015;Zhou et al 2017). Many projects have been built in the Jingjiang reach to handle problems like flood control and navigation, including dyke projects, bank-protection projects and waterway regulation projects.…”

Seepage Flow Model and Deformation Properties of Coastal Deep Foundation Pit under Tidal Influence

“…Finally, Atangana and Vermeulen further presented a proposition for reducing uncertainties in groundwater study. In order to investigate the influences of seepage field on mechanical property, Wang [5] developed a 3-Dimensional Stochastic Seepage finite element model and proposed a more comprehensive stochastic algorithm to analyze seepage field problems. Qiu et al [6] established a statistical model and an artificial wavelet neural network model so as to improve predication accuracy.…”

The Fluid-Solid Coupling Analysis of Three-Dimensional Slope Based on ABAQUS

“…But with the deepening of research, it is found that the porous medium is not completely rigid, the dynamic water pressure in the seepage process will produce deformations. The papers [2][3][4][5][6][7][8][9] show the interrelationship between the seepage field and the stress field: on the one hand, the change of seepage field makes the changes in seepage volume force and penetration pressure so that the external loads change, which causes stress redistribution; On the other hand, the change of stress field leads to the change of material porosity which caused by the change of permeability coefficient, so that the seepage field changes. This paper will focus on the coupling analysis of 3D model, and the interrelationship between the seepage field and the stress field which impacted on slope stability.…”