Measurement and Modeling of Unsaturated Hydraulic Conductivity

Perkins, K. S.

doi:10.5772/20017

Cited by 3 publications

(2 citation statements)

References 32 publications

(25 reference statements)

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“…It has a significant role, in estimating the quantity of seepage through earth dams and levees and conducting stability analysis of earth structures subjected to seepage forces [7]. Saturated K of porous media is important for modeling the flow of water in the saturated zone [8,9]. In the previous studies, it was postulated that the K of granular porous media is related to grain size characteristics i.e., d 10 , d 20 , d 50 , and d 60 [10].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Hydraulic Conductivity of Porous Media Using Empirical Relationships

Chandel¹,

Shankar²

2022

Modeling of Sediment Transport

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Flow-through porous media is concerned with the term hydraulic conductivity (K), which imparts a crucial role in the groundwater processes. The present work examines the impact of key parameters i.e., grain size and porosity on the K of four borehole soil samples (Gravelly, Coarse, Medium, and Fine sands) and evaluates the applicability of seven empirical relationships for K estimation. Experimental investigations postulate that an increase in the grain size and porosity value increases the K value. Further, the K values computed using the Kozeny–Carman relationship proved to be the best estimator for Coarse, medium, and fine sands followed by Beyer and Hazen relationships. However, the Beyer relationship had a closer agreement with experimentally obtained value for Gravelly sand. Alyamani and Sen relationship is very sensitive toward the grain-size curve pattern, hence it should be used carefully. Whereas other relationships considered in this study underestimated the K of all samples.

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Section: Introductionmentioning

confidence: 99%

Assessment of Hydraulic Conductivity of Porous Media Using Empirical Relationships

Chandel¹,

Shankar²

2022

Modeling of Sediment Transport

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“…The unsaturated hydraulic conductivity of soil constituted one of the major components affecting the water movement in soil (Perkins, 2011;Rasoulzadeh 2011;Ghanbarian-Alavijeh and Hunt, 2012), solutes transport in soil (Ghanbarian-Alavijeh and Hunt, 2012; Rasoulzadeh 2011), planning of irrigation and land drainage, and Model of groundwater (Rasoulzadeh, 2011). Measurement of the unsaturated hydraulic conductivity of soil are generally more difficult with the low accuracy (Wu et al, 2011;Perkins, 2011;Yongfu Xu, 2013) and it required a long time (Jarvis et al, 2002;Ghanbarian-Alavijeh and Hunt, 2012;Jarvis et al, 2013;Nasta et al, 2013;Stoffregen and Wessolek, 2014).…”

Section: Introductionmentioning

confidence: 99%

Untitled

2016

J.Degrade.Min.Land Manage.

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The hedgerow systems are the agroforestry practices suggesting any positive impacts and negative impacts on soil characteristics. This study evaluated the effects of hedgerows on the unsaturated hydraulic conductivity of soil with the Libardi method approach. This study was conducted in North Lampung for 3 months on the hedgerow plots of Peltophorum dassyrachis (P), Gliricidia sepium (G), and without hedgerow plot (K), with four replications. Each plot was watered as much as 150 liters of water until saturated, then the soil surface were covered with the plastic film. Observation of soil moisture content was done to a depth of 70 cm by the 10 cm intervals. Soil moisture content was measured using the Neutron probe that was calibrated to get the value of volumetric water content. Unsaturated hydraulic conductivity of soil was calculated by using the Libardi Equation. Data were tested using the analysis of variance, the least significant different test (LSD), Duncan Multiple Range Test (DMRT), correlation and regression analysis. The results showed that the hedgerow significantly affected the soil moisture content and unsaturated hydraulic conductivity. Soil moisture content on the hedgerow plots was lower than the control plots. The value of unsaturated hydraulic conductivity in the hedgerow plots was higher than the control plots. Different types of hedgerows affected the soil moisture content and unsaturated hydraulic conductivity. The positive correlation was found between the volumetric soil moisture content and the unsaturated hydraulic conductivity of soil.

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Journal of Degraded and Mining Lands Management

Prijono

Laksmana

Suprayogo

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Measurement and Modeling of Unsaturated Hydraulic Conductivity

Cited by 3 publications

References 32 publications

Assessment of Hydraulic Conductivity of Porous Media Using Empirical Relationships

Assessment of Hydraulic Conductivity of Porous Media Using Empirical Relationships

Untitled

Journal of Degraded and Mining Lands Management

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