Efficiency of Different Models for Estimating Hydraulic Conductitiviy Using Pressure Plate Apparatus in Soils of Coastal Plain Sands at Oboro Clan- Ikwuano LGA, of Abia State:- Omenihu, Eruchi L
ABSTRACT
A study was
carried out to determine the efficiency of different models for estimating
hydraulic conductivity in soils of coastal plain sands of Oboro clan – Ikwuano
Local Government area in Abia State. Representative undisturbed soil samples
were collected from 8 communities and their properties determined using
standard laboratory methods and experimental models. Five different models were
used to estimate the saturated hydraulic conductivity (Ks) of the
soils of the study area, these models were Hazen, Relative Effective Porosity
Model (REPM), Slitcher, Terzaghi and Kozeny-Carman Models. Soil properties determined include depth,
aggregate sizes, bulk density and porosity. The predicted and observed soil
properties were compared using multiple linear regression test. Further
evaluation of the accuracy of prediction on the models used in comparison with
the laboratory Ks values were carried out with absolute mean
percentage error. Generally, the results showed that the soils are of Sandy
Basic soil type. There was a significant positive correlation (P<0.001)
between bulk density and porosity. The hydraulic conductivity maximum and
minimum values of Kozeny-Carman, Hazen, Slitcher, Terzaghi and Relative
Effective Porosity Model (REPM) were 67.68m/day and 0.86m/day, 18.72m/day and
0.86m/day, 9.50m/day and 0.29m/day, 68.25m/day and 1.15m/day, 191.52m/day and
2.59m/day respectively. The result indicated that the hydraulic conductivities
calculated by Slitcher models is in all cases lower than that from the other
models as well as from pressure plate apparatus test result. Saturated
hydraulic conductivity estimated using REPM gave the highest Ks value of
191.52m/day. This study therefore concluded that the best overall estimation of
Ks is reached based on relative effective porosity model followed by
Terzaghi and then Kozeny-Carman models. The research recommended that Relative
Effective Porosity Model (REPM) as the best and useful alternative for
estimating Ks of soils within the South-Eastern Nigeria.
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ERUCHI, L (2024). Efficiency of Different Models for Estimating Hydraulic Conductitiviy Using Pressure Plate Apparatus in Soils of Coastal Plain Sands at Oboro Clan- Ikwuano LGA, of Abia State:- Omenihu, Eruchi L. Repository.mouau.edu.ng: Retrieved May 01, 2024, from https://repository.mouau.edu.ng/work/view/efficiency-of-different-models-for-estimating-hydraulic-conductitiviy-using-pressure-plate-apparatus-in-soils-of-coastal-plain-sands-at-oboro-clan-ikwuano-lga-of-abia-state-omenihu-eruchi-l-7-2
LUCKY, ERUCHI. "Efficiency of Different Models for Estimating Hydraulic Conductitiviy Using Pressure Plate Apparatus in Soils of Coastal Plain Sands at Oboro Clan- Ikwuano LGA, of Abia State:- Omenihu, Eruchi L" Repository.mouau.edu.ng. Repository.mouau.edu.ng, 16 Apr. 2024, https://repository.mouau.edu.ng/work/view/efficiency-of-different-models-for-estimating-hydraulic-conductitiviy-using-pressure-plate-apparatus-in-soils-of-coastal-plain-sands-at-oboro-clan-ikwuano-lga-of-abia-state-omenihu-eruchi-l-7-2. Accessed 01 May. 2024.
LUCKY, ERUCHI. "Efficiency of Different Models for Estimating Hydraulic Conductitiviy Using Pressure Plate Apparatus in Soils of Coastal Plain Sands at Oboro Clan- Ikwuano LGA, of Abia State:- Omenihu, Eruchi L". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 16 Apr. 2024. Web. 01 May. 2024. < https://repository.mouau.edu.ng/work/view/efficiency-of-different-models-for-estimating-hydraulic-conductitiviy-using-pressure-plate-apparatus-in-soils-of-coastal-plain-sands-at-oboro-clan-ikwuano-lga-of-abia-state-omenihu-eruchi-l-7-2 >.
LUCKY, ERUCHI. "Efficiency of Different Models for Estimating Hydraulic Conductitiviy Using Pressure Plate Apparatus in Soils of Coastal Plain Sands at Oboro Clan- Ikwuano LGA, of Abia State:- Omenihu, Eruchi L" Repository.mouau.edu.ng (2024). Accessed 01 May. 2024. https://repository.mouau.edu.ng/work/view/efficiency-of-different-models-for-estimating-hydraulic-conductitiviy-using-pressure-plate-apparatus-in-soils-of-coastal-plain-sands-at-oboro-clan-ikwuano-lga-of-abia-state-omenihu-eruchi-l-7-2