Results 31 to 40 of about 23,917 (167)

An Analytical Solution to Two-Region Flow Induced by Constant-Head Pumping in an Unconfined Aquifer

open access: yesApplied Sciences, 2022
This paper proposes an analytical solution to the problem of two-region flow induced by constant-head pumping tests in an unconfined aquifer based on the Dupuit assumption.
Yijie Zong, Liang Xiao
doaj   +1 more source

Estimation of heterogeneous aquifer parameters using centralized and decentralized fusion of hydraulic tomography data [PDF]

open access: yesHydrology and Earth System Sciences, 2014
Characterization of spatial variability of hydraulic properties of groundwater systems at high resolution is essential to simulate flow and transport phenomena.
A. H. Alzraiee, D. Baú, A. Elhaddad
doaj   +1 more source

Experimental Observation on Variation of Rheological Properties during Concrete Pumping

open access: yesInternational Journal of Concrete Structures and Materials, 2018
Workability of concrete varies during pumping. Even though concrete satisfies the required workability before pumping, it often does not satisfy the required standard after pumping. Moreover, serious problem could happen such as segregation and blockage.
Kyong Pil Jang   +5 more
doaj   +1 more source

Analysis of the Use of the PV Installation in the Power Supply of the Water Pumping Station

open access: yesEnergies, 2022
Delivering water to consumers uses a lot of electricity. In the era of limited fossil fuel resources, we are increasingly looking at the possibilities of using renewable energy sources to power residential buildings or industries.
Przemysław Średziński   +3 more
doaj   +1 more source

HSB 84A pumping test [PDF]

open access: yes, 2000
Two constant discharge, multiple well pumping tests were performed in the Congaree aquifer at the H-Area seepage basins during the weeks of April 30 through May 11. The purpose of the tests was to collect information that might determine the source of groundwater contamination in the Congaree aquifer and to estimate the hydraulic parameters of the ...
openaire   +2 more sources

Determination of aquifer parameters using geoelectrical sounding and pumping test data in Khanewal District, Pakistan

open access: yesOpen Geosciences, 2016
In order to determine the groundwater resources and potentials of the Khanewal District of Pakistan, a geophysical method in combination with pumping test data were used.
Akhter Gulraiz, Hasan M.
doaj   +1 more source

On the coupled unsaturated–saturated flow process induced by vertical, horizontal, and slant wells in unconfined aquifers [PDF]

open access: yesHydrology and Earth System Sciences, 2017
Conventional models of pumping tests in unconfined aquifers often neglect the unsaturated flow process. This study concerns the coupled unsaturated–saturated flow process induced by vertical, horizontal, and slant wells positioned in an unconfined ...
X. Liang, H. Zhan, Y.-K. Zhang, J. Liu
doaj   +1 more source

Evolution of physical and mechanical properties of municipal solid waste in a landfill with low kitchen waste content

open access: yesYantu gongcheng xuebao, 2023
The classified treatment of the municipal solid waste (MSW) will lead to a significant decline in the proportion of kitchen waste in landfills in China, which puts forward new requirements for the long-term safe operation of landfills.
CHEN Hongxin 1, 2, LÜ Dongjinag 1, 2, FENG Shijin 1, 2, ZHANG Xiaolei 1, 2, WU Shaojie 1, 2
doaj   +1 more source

The properties of concrete mixes, pumped over long distances

open access: yesMATEC Web of Conferences, 2017
The influence of technological factors, chemical and mineral admixtures on pumping and thixotropic properties of concrete mixtures was studied. The causes of the loss of pressure when pumping concrete mixtures through channels of a complex section are ...
Sopov Viktor, Dolgiy Viktor
doaj   +1 more source

Weighted joint curve inversion of aquifer parameters in pumping tests with multiple observation wells

open access: yesDesalination and Water Treatment
Accurately calculating hydrogeological parameters is crucial for evaluating and managing groundwater resources. Pumping tests are the primary method for obtaining aquifer parameters, and their accuracy directly impacts the assessment of regional ...
Mingqian Li   +3 more
doaj   +1 more source

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