Results 21 to 30 of about 50,745 (217)

Analysis of pump stations operation mode and measures to improve them [PDF]

open access: yesE3S Web of Conferences, 2023
This article presents the data analysis of pumping stations controlled by the Pumping Stations and Energy Departments (PS&ED) of the Republic of Karakalpakstan.
Kodirov D. T.   +3 more
doaj   +1 more source

Optimizing regional irrigation water allocation for multi-stage pumping-water irrigation system based on multi-level optimization-coordination model

open access: yesJournal of Hydrology X, 2019
The optimal allocation and utilization of irrigation water are particularly significant but complex in multi-stage pumping-water irrigation systems which involve both water distribution processes and machine operation management.
Yao Jiang   +3 more
doaj   +1 more source

Freshwater-salt water interface dynamics during pumping tests

open access: yesAcque Sotterranee, 2019
Freshwater-salt water interface (FSI) location is very important information for decision maker in managing coastal aquifer system, however, its temporal change have been hard to get using conventional method such as EC monitoring at one or several fixed
Yongcheol Kim   +2 more
doaj   +1 more source

Experimental study on mechanism for pumping-induced land subsidence [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2020
Groundwater pumping can cause severe land subsidence, yet the mechanisms have not been completely clear. A laboratory physical model test was done to investigate the mechanism for pumping-induced land subsidence.
Y. Zhang   +5 more
doaj   +1 more source

Measurement of groundwater dewatering in excavations in Tianjin

open access: yesYantu gongcheng xuebao, 2019
Based on the characteristics of engineering geology and hydrogeological characteristics in Tianjin, multiple excavation dewatering projects are monitored comprehensively in the entire process.
DIAO Yu 1, 2, GAO Ze-dong 1, 2, ZHENG Gang 1, 2, CHU Zhen-xi 1, 2, GUO Yong-zhi 1, 2, JIA Zhen-yang 1, 2
doaj   +1 more source

Water pumping in mantle shear zones. [PDF]

open access: yesNat Commun, 2017
AbstractWater plays an important role in geological processes. Providing constraints on what may influence the distribution of aqueous fluids is thus crucial to understanding how water impacts Earth’s geodynamics. Here we demonstrate that ductile flow exerts a dynamic control on water-rich fluid circulation in mantle shear zones.
PrĂ©cigout J   +3 more
europepmc   +7 more sources

Experimental Study on Drainage of Strata Water-Bearing and Permeability in Huangyuchuan Coal Mine

open access: yesMeikuang Anquan, 2020
The pumping test was carried out by arranging pumping holes in the ground of Huangyuchuan Mine to test the water inflow, permeability coefficient and influence radius of different hole positions, and to master the characteristics of water and ...
WU Hongtao, CHEN Jiangfeng, WANG Chongping, DOU Hao3
doaj   +1 more source

Fault diagnosis of large-scale electric pumping and irrigation electromechanical equipment by integrating CWT and swin transformer

open access: yesFrontiers in Mechanical Engineering
This paper proposes a large-scale electromechanical equipment fault diagnosis framework that integrates continuous wavelet transform (CWT), Swin transformer, and cross attention. Firstly, CWT uses optimized complex Morlet wavelets (impact sharpness ratio
Jin Chen
doaj   +1 more source

PERFORMACE EVALUATION OF SOLAR PHOTOVOLTAIC PUMP FOR OPERATING OF LANDSCAPE SYSTEM [PDF]

open access: yesArab Universities Journal of Agricultural Sciences, 2018
Most landscapes requires the water essentially, water pumping consumes a significant amount energy. The study carried out to evaluate the performance of a solar water pumping system for the purpose of operating landscape system.
B. Swidan, M. Mostafa
doaj   +1 more source

Numerical Study on the Effects of Regional Groundwater Flow on the Contaminant Migration through an Inactive Supply Well as a Preferential Flow Pathway

open access: yesGeofluids, 2022
Preferential flow pathways connect upstream and downstream channels in abandoned mines or seasonally pumping areas. The inactive supply well facilitates contaminant migration between aquifers leading to water quality challenges; it is important to note ...
Xu Li   +5 more
doaj   +1 more source

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