Numerical simulation of seepage problem in porous media

Fadaei-Kermani, Ehsan; Shojaee, Saeed; Memarzadeh, Rasoul; Barani, Gholam‐Abbas

doi:10.1007/s13201-019-0965-1

Cited by 7 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, a limitation of these methods is that they often require active participation and/or disturbance of the soil structure for data gathering. Theoretical approaches include the use of Water 2024, 16, 1009 2 of 14 analytical [14], numerical [15][16][17][18][19][20][21], and statistical [22,23] models to predict earthen dam integrity with various conditions and time scales. However, each model has specific assumptions and limitations.…”

Section: Introductionmentioning

confidence: 99%

“…However, each model has specific assumptions and limitations. Analytical models are often too complicated and computationally expensive except for simple generalized models [15]. Numerical models, such as finite element analysis, require extensive experimental parameters to replicate field conditions, but minor parameter variations can have drastic results [14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Prediction of Soil Erosion Using 3D Point Scans and Acoustic Emissions

Wise,

Al Dushaishi

2024

Water

View full text Add to dashboard Cite

Over half of the approximately 12,000 earthen watershed dams sponsored by the USDA have exceeded their planned 50-year service life. Age, land use changes, extreme weather events, structural deterioration, and sedimentation filling flood pools pose increased risks of dam incidents and potential failures. Among various mechanisms leading to integrity issues, soil erosion is of particular concern due to its potential to occur with little warning. The objective of this research is to determine if soil erosion can be predicted using acoustic emissions. A simulated dam overtopping experiment was replicated in a test flume with dimensions of 0.61 m by 4.27 m (2 ft. by 14 ft.) with a 13.7% slope and a 0.15 m (6 in) layer of inorganic clay (USCS CL) compacted at 17.4% moisture content. A constant flow discharge of 0.07 m3/s (2.37 cfs) was applied to induce erosion. The test was performed until complete failure of the test section occurred. Throughout the experiment, a sonar radar, a 3D scanning total station, and an accelerometer were used to monitor the water level, erosion levels, and vibrations, respectively. The frequency analysis of the water-induced vibrations was compared to measured erosion volumes to determine if in situ vibrations can predict erosion. The results revealed a linear relationship between erosion volume and time, with noticeable changes in the frequency domains as erosion progressed. The outcomes of this research have the potential to provide real-time insights into the integrity of earthen dams concerning erosion, offering a valuable tool for monitoring and maintenance.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Prediction of Soil Erosion Using 3D Point Scans and Acoustic Emissions

Wise,

Al Dushaishi

2024

Water

View full text Add to dashboard Cite

show abstract

“…For example, COMSOL software was used to study water inrush in fault zones (Yu et al, 2020;Yu et al, 2021;Wu et al, 2022), and the seepage and stability of embankment dams (Tulus and Marpaung, 2018;Wang and Yu, 2021;Zhang et al, 2021). The SEEP/W software was used to study seepage in the landfill leachate layers (Gang et al, 2020), and the smoothed particle hydrodynamics method is efficient and capable of seepage analysis, particularly for the problems with complex geometries (Fadaei-Kermani et al, 2019). Moreover, the UDEC software was used to simulate mining stress of coal seams Fadaei-Kermani et al, 2019), and the FLAC3D was widely used in the study of seepage problems, such as saturated and unsaturated seepage (Li et al, 2012), mined rock seepage (Ma et al, 2006), and slope seepage (Zhang et al, 2020;Zhang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…The SEEP/W software was used to study seepage in the landfill leachate layers (Gang et al, 2020), and the smoothed particle hydrodynamics method is efficient and capable of seepage analysis, particularly for the problems with complex geometries (Fadaei-Kermani et al, 2019). Moreover, the UDEC software was used to simulate mining stress of coal seams Fadaei-Kermani et al, 2019), and the FLAC3D was widely used in the study of seepage problems, such as saturated and unsaturated seepage (Li et al, 2012), mined rock seepage (Ma et al, 2006), and slope seepage (Zhang et al, 2020;Zhang et al, 2022). Research on the slurry water bleeding and seepage problem of IOGI involves mining, grouting, slurry flow, and other factors, which renders complexity to analysis.…”

Section: Introductionmentioning

confidence: 99%

Experimental method and application of the slurry “diffusion-bleeding-seepage” of isolated overburden grout injection

Wang

Xu²,

Xuan³

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

Isolated overburden grout injection (IOGI) is a green mining method to control surface subsidence. Slurry water significantly influences grouting effectiveness and mining safety. This study establishes a three-dimensional visualization experimental system for slurry “diffusion-bleeding-seepage” to investigate the seepage law of slurry water. The system is composed primarily of a transparent box (1.2 m × 0.5 m × 0.25 m) and support, with the solid–liquid coupling seepage similar material and modules for mining, grouting injection, slurry pressure and displacement monitoring, overburden saturation monitoring, and water leakage monitoring of the working face. A similar material with good permeability and non-disintegration is obtained by hydrophilic, water absorption, and permeability tests. Grouting and mining are simulated by pulling acrylic sheets and pumping slurry. With the fly ash slurry entering the injection layer, the slurry undergoes water–cement separation, and the water bleeding is formed to seep into the similar material. The volumetric water content of the similar material is obtained by arranging multiple groups of volumetric water content sensors into the similar material. The corresponding saturation is obtained by theoretical calculation. The experimental system is used to simulate the seepage of slurry water in a high initial saturation overburden, and the characteristics of injection slurry diffusion and water bleeding are obtained. The profile distribution of seepage of slurry water is found to possess a semi-elliptical shape. Under the condition of high initial saturation, slurry water appears in the working face. The system provides a convenient method for further research of IOGI slurry water seepage.

show abstract

“…Managing uncontrolled seepage through the body and foundation of embankments is a major concern for engineers operating dams [9]. The seepage flow within hydraulic structures, like dams, has a significant impact on their stability and deformation [10][11][12]. Seepage might trigger slope failure by generating high pressure on the pores within the soil or by increasing the wetness of the slope.…”

Section: Introductionmentioning

confidence: 99%

Understanding Downstream Slope Failure in Earth Dams: Causes and Remedies -a Case Study of Trieu Thuong NO.2 Dam, Quang Tri, Vietnam

Tran¹

2023

GEOMATE

View full text Add to dashboard Cite

Lessons learned from dealing with earth dam incidents have made a significant contribution to surveying, designing, constructing, and repairing works. However, disseminating these lessons to the public must be done carefully. This study aims to analyze the causes and remedial measures for the downstream failure of the Trieu Thuong No. 2 earthen dam in Quang Tri province, Vietnam. To achieve this, the finite element software, MIDAS, was used for seepage and slope stability analysis. The simulation was based on design documents, past responses to dam incidents, and additional geological survey data. The results indicated that there were three major causes of instability in the dam: (1) the existence of a soft soil layer beneath the upstream slope foundation that was not recognized in the original design; (2) a difference in hydraulic conductivity between the original dam soil and the backfill; and (3) the absence of a drainage arrangement between the new and original layers of the dam. Therefore, proposed solutions include (1) reducing settlement by reinforcing the foundation beneath the downstream slope with soil-cement columns; (2) using soil backfill with a higher permeability coefficient than the existing dam to expand the dam crest; and (3) implementing a drainage system between the new and old layers of the dam. These solutions have been found to address the problem of downstream slope instability and can serve as a reference for future projects.

show abstract

Numerical simulation of seepage problem in porous media

Cited by 7 publications

References 14 publications

Prediction of Soil Erosion Using 3D Point Scans and Acoustic Emissions

Prediction of Soil Erosion Using 3D Point Scans and Acoustic Emissions

Experimental method and application of the slurry “diffusion-bleeding-seepage” of isolated overburden grout injection

Understanding Downstream Slope Failure in Earth Dams: Causes and Remedies -a Case Study of Trieu Thuong NO.2 Dam, Quang Tri, Vietnam

Contact Info

Product

Resources

About