Subsurface drainage of a three layered soil with slowly permeable top layer

Singh, P. K.; Singh, Om Pal; Jaiswal, C. S.; Chauhan, H. S.

doi:10.1016/s0378-3774(99)00027-x

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…Dagan (1965), Toksoz &Kirkham (1971), andDieleman (1974) obtained an approximate solution, an analytical solution, and linearized forms of equations, respectively, for the steady-state drainage of two-or three-layered soils. Singh et al (1999) studied subsurface drainage of a three-layered soil with a slowly permeable top layer under unsteady-state conditions. The study showed that the WT head is influenced by the location of the interface between the soil layers.…”

Section: Résumémentioning

confidence: 99%

“…On the other hand, most of the previous studies on layered soil appear to be based on steady-state drainage conditions that do not work appropriately in drained fields with periodic rainfall. The only work considering the unsteady-state conditions was conducted with a one-dimensional equation, ignoring the flow above the soil layer interface in a non-paddy field (Singh et al, 1999). Therefore, considering the special stratification of the soil layers in paddy fields, which plays a significant role in subsurface drainage design, a more appropriate approach is needed.…”

Section: Résumémentioning

confidence: 99%

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Water table dynamics between two adjacent subsurface drainage laterals in a paddy field: A newly improved analytical solution

Talukolaee

Shahnazari

Ritzema

2022

Irrigation and Drainage

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Installation of subsurface drainage systems in paddy fields is crucial to achieve the feasibility of year‐round cropping and high productivity and to create more conducive working conditions for the use of farm machinery. Therefore, three subsurface drainage systems were installed in a paddy field located in northern Iran to control the water table (WT) during the rainy seasons. To predict the WT between subsurface drainage systems in the field, an analytical solution of two‐dimensional transient saturated flow was presented using the Bear equation. In the next step, a modified procedure was developed to separately involve the vertical head due to the existence of clayey and layered soils in the studied field. The results of the solutions were compared with the collected field data. The obtained results for the WT profile indicated that the modified procedure had a better agreement with the field data (9%–13% differences) in comparison with the conventional two‐dimensional solution (23%–75% differences). This revealed that considering the vertical head in the media cannot be ignored in analytical or numerical simulations of WT dynamics. As a concluding result, the modified procedure was found to be more efficient in paddy field drainage design.

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Section: Résumémentioning

confidence: 99%

Section: Résumémentioning

confidence: 99%

Water table dynamics between two adjacent subsurface drainage laterals in a paddy field: A newly improved analytical solution

Talukolaee

Shahnazari

Ritzema

2022

Irrigation and Drainage

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show abstract

“…The results predicted by the derived solution were found to be in close agreement with those obtained from the numerical simulations. Therefore, it was concluded that the proposed model holds well for situations of practical import and could be used in future work with large-scale hydrologic models Singh et al (1999). survived subsurface drainage of a three layered soil with slowly permeable top layer.…”

mentioning

confidence: 90%

A Comparison between Horizontal and Vertical Drainage Systems (Include Pipe Drainage, Open Ditch Drainage, and Pumped Wells) in Anisotropic Soils

Valipour¹

2012

IOSRJMCE

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Selecting a proper drainage system always has been discussed in agricultural or other fields. In anisotropic soils, this problem is more sensitive for experts. In this study, a comparison has been done between horizontal and vertical drainage in anisotropic soils. For this purpose, using EnDrainWin and WellDrain softwares drain spacing and well spacing, respectively, determined. The results showed that in the same situation, horizontal drainage systems due to the higher spacings between drains (reducing number of drainage and thus reducing the cost) were better than vertical drainage systems. However, vertical drainage systems due to the lower changes in well spacing in different anisotropic soils were suitable for conditions that soil hydraulic conductivity was likely to change.

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“…Different researchers viz., Buckland et al (1987), Firake (1987), Lal et al (1989), Singh et al (1992), Singh et al (1999), Nasralla (2007) Tripathi et al (2008), Kumar et al (2013), Pali (2013), Naftchally et al (2014), Pali (2015) and Yousef et al (2016) etc. evaluated different steady and unsteady drain spacing equations in different soils and hydrological situations, and most of them recommended unsteady drain spacing equations over steady drain spacing equations.…”

Section: Introductionmentioning

confidence: 99%

Field Evaluation of Unsteady Drain Spacing Equations for Optimal Design of Subsurface Drainage System under Waterlogged Vertisols of Maharashtra

Rathod¹,

Dahiwalkar²,

Gorantiwar³

et al. 2020

IJARe

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The field experiment was conducted at Agricultural Research Station, Kasbe Digraj, Dist. Sangli during Adsali sugarcane season of 2012-13 to 2013-14. The experiment was conducted by installing subsurface drainage system with 10, 20, 30 and 40 m drain spacing and 1 m drain depth. In view of different costs and effectiveness of subsurface drainage associated with the varying depths and spacings, field evaluation of unsteady drain spacing equations was important for finding out the optimal drain spacing equation among various equations. The field evaluation of unsteady drain spacing equations revealed that the van Schilfgaarde, Hammad, Modified Glover, Guyon and Integrated Hooghoudt’s equation performed satisfactory for estimation of water table depths among seven unsteady drain spacing equations. The Glover-Dumm and Modified Glover-Dumm’s equations were not performed satisfactory for estimation of water table depths. Among unsteady drain spacing equations, van Schilfgaarde’s equation performed better and hence recommended for water table depth estimation and in turn for optimal design of subsurface drainage system under waterlogged Vertisols of Maharashtra.

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Subsurface drainage of a three layered soil with slowly permeable top layer

Cited by 8 publications

References 4 publications

Water table dynamics between two adjacent subsurface drainage laterals in a paddy field: A newly improved analytical solution

Water table dynamics between two adjacent subsurface drainage laterals in a paddy field: A newly improved analytical solution

A Comparison between Horizontal and Vertical Drainage Systems (Include Pipe Drainage, Open Ditch Drainage, and Pumped Wells) in Anisotropic Soils

Field Evaluation of Unsteady Drain Spacing Equations for Optimal Design of Subsurface Drainage System under Waterlogged Vertisols of Maharashtra

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