Delaying solute transport through the soil using unequal double sheet piles with a surface floor

Mansour, Mahmoud M.; Ellayn, Ashraf Fathy; Helal, Esam; Rashwan, I. M. H.; Sobieh, Mohamed F.

doi:10.1016/j.asej.2018.10.003

Cited by 16 publications

(9 citation statements)

References 16 publications

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“…Results of the current research proved consistent with several studies devoted to the use of barrier walls to investigate the contaminant fate and transport based on either experimental or numerical techniques (e.g., Armanyous et al., 2016; Basha et al., 2009; Mansour et al., 2018; Shaeshaa et al., 2018). This study, however, addressed appraising the integrated use of both techniques where the results agreed well.…”

Section: Discussionsupporting

confidence: 89%

“…Predictions from the finite difference methods (FDM) showed excellent agreement with analytical solutions for a wide range of field conditions (Al‐Daood, 2011; Landage, 2014; Shaeshaa et al., 2018). The three combined approaches proved that the use of double sheet piles and a horizontal impermeable floor at the surface could increase the arrival time about twice that of a single sheet pile in porous media (Mansour, Ellayn, Helal, Rashwan, & Sobieh, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

Mostafa

Gado

Masoud

et al. 2020

Water Environment Research

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The groundwater contamination and its impacts on the hydrologic systems and society are critical environmental concerns in the world. This research presents insights from the numerical (SEEP/W and CTRAN/W) and the experimental (sandbox model) analyses of the use of double vertical barrier walls for groundwater protection. The main objective was to evaluate contaminant transport under the effect of several variables. The arrival time increases with increasing the distance between the pollutant source and the first wall, first wall depth of penetration, the distance between the two walls and also increases at smaller hydraulic head differences, and lower conductivities. Furthermore, using double barrier walls would significantly reduce contaminant concentration at the downstream area. This control is most significant when the depth of first wall penetration is larger than that of the second wall. Results proved consistent with several similar studies and advantageous over many of them by the integrated use of both techniques with more variable parameters evaluated. © 2020 Water Environment Federation • Practitioner points • The research will introduce insights from the effect of using double barrier walls on the hydraulic control of contaminant transport. • The effect of several variables on the contaminant arrival time and concentration is investigated. • Using double barrier walls has a significant impact on contamination transport through the soil. • This control is most significant when the penetration depth of the first wall is larger than that of the second.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

Mostafa

Gado

Masoud

et al. 2020

Water Environment Research

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“…Mansour et al [15] concluded that using unequal double sheet piles could increase arrival time about twice that of a single sheet pile. Adsorption of phosphate on soil particles is linearly related to concentration, according to advectiondispersion analysis [16].…”

Section: Figure 1 Location Of Al-mishraq Sitementioning

confidence: 99%

Contaminant Movement Control from Al-Mishraq Extraction Area-Numerical Approach

Ismaeel¹,

Khalil²

2022

IJSDP

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Mishraq field hits soil and groundwater, eventually reaching the Tigris River. The process of hot water injection for sulfur extraction led to a change in the hydrological conditions of the area. The spread process of this water through the soil carries liquid dissolved sulfur towards the river that causes pollution of soil and river. The extent and concentration of dissolved sulfur were studied before and after proposed treatments. Also, the efficiency of these treatments would be estimated considering transport and diffusion theory in saturated/unsaturated states using the GEO-SLOPE software evaluating the extent of dissolved sulfur transfer through site soils in two cases. The first case represents the soil region without proposed treatments, and the second case represents the soil region with proposed treatments. The results show that a length of vertical barriers ranging between 180-200 m was efficient to prevent pollutants from moving. Also, the concentration and extent of contaminant spread in soil depended on the distance between vertical barriers and contamination source. Also, it found that at distances less than 300 m concentration of contaminant was high with a small range of soil, while at distances more than 300 m concentration of the contaminant was lower with a wider spread of soil.

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“…Results demonstrate that the time of arrival increases to decrease the difference in head between the sheet piles upstream and downstream and to increase the lower layer's permeability coefficient. Mansour et al [8] presented a numerical and experimental examination of the transport of solvents in porous media through the use of unequal double sheet piles and surface horizontal impermeable flooring. The results concluded that making use of unequal double sheet piles may increase the time of arrival by twice as compared to the single sheet pile.…”

Section: Introductionmentioning

confidence: 99%

Effect of Steel Sheet Piles Defects on Seepage and Contamination Transport through the Soil

Arafat

2022

Journal of Engineering Research

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Hydraulic control is a popular method for control contaminant transport through groundwater. Sheet piles are perfectly used for control and delaying seepage and contaminant transport through soil. Due to imperfections of sealing, corrosion, or due to accidental damage, a horizontal slot is present in the sheet pile at depth below the ground. The gap allows water and contaminant to pass through it. The present paper investigates the effect of defects in steel sheet pile on seepage and contaminant transport whenever the slots at various distances from the ground happened. To solve the seepage and contaminant transport through groundwater, a numerical model (Geo-Studio) based on the Finite Element Method was utilized. The current study is two-dimensional flow for the effect of slot place and sheet pile depths and other parameters as, soil hydraulic conductivity, head difference between upstream and downstream pile, breadth of the gap, and distance between the contamination source and the sheet pile. In the present study a suggested equations is used for calculating total seepage discharge and seepage under sheet pile with slot for known depth of slot with maximum error 5.78 % and 1.922 % respectively. Also, an empirical equation for calculating the traveling time of contaminant through the slot in polynomial correlation formula has coefficients of determination values vary between 0.9385 and 0.9903 are presented.

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Delaying solute transport through the soil using unequal double sheet piles with a surface floor

Cited by 16 publications

References 16 publications

Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

Contaminant Movement Control from Al-Mishraq Extraction Area-Numerical Approach

Effect of Steel Sheet Piles Defects on Seepage and Contamination Transport through the Soil

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