Results 1 to 10 of about 108,077 (120)

Study on the permeability coefficient model of salinized frozen soil based on unfrozen water content curve

open access: yesFrontiers in Earth Science, 2023
Due to the fact that the permeability coefficient of salinized frozen soil is difficult to measure through experimental test, this paper develops a model of the permeability coefficient of salinized frozen soil by using SFCC curves, which takes into ...
Gunag Liu   +5 more
doaj   +1 more source

Permeability similarity of soils in centrifugal model tests

open access: yesYantu gongcheng xuebao, 2022
Whether the time scale tp/tm=n2 for consolidation and pore water pressure diffusion in centrifugal model tests is correct or not is infact. How the permeability coefficient of soils changes with the centrifugal acceleration.
WANG Nian-xiang 1, 2 , , REN Guo-feng 1, 2, GU Xing-wen 1, 2
doaj   +1 more source

Optimization Algorithm of Effective Stress Coefficient for Permeability

open access: yesEnergies, 2021
The effective stress coefficient for permeability is a significant index for characterizing the variation in permeability with effective stress. The realization of its accuracy is essential for studying the stress sensitivity of oil and gas reservoirs ...
Xiaolong Zhang   +2 more
doaj   +1 more source

Prediction of Coefficient of Permeability of Unsaturated Soil

open access: yesJournal of Engineering, 2023
A simple technique is proposed in this paper for estimating the coefficient of permeability of an unsaturated soil based on physical properties of soils that include grain size analysis, degree of saturation or water content, and porosity of the soil ...
Mohammed Y. Fattah   +2 more
doaj   +1 more source

Permeability coefficient tests in non-cohesive soils

open access: yesPrzegląd Naukowy Inżynieria i Kształtowanie Środowiska, 2020
The paper aims to comparison the permeability coefficient in non-cohesive soils by the method of test pumping and based on tests in a consolidometer. The tests were carried out on 18 types of non-cohesive soils with different fraction. Pumping tests were
Grzegorz Wrzesiński
doaj   +1 more source

Experimental study on the one-dimensional nonlinear consolidation and seepage of saturated clay considering stress history under ramp loading

open access: yesRock and Soil Mechanics, 2021
To study the permeability of saturated clays with different stress histories under ramp loading, the one-dimensional consolidation and seepage tests are carried out using modified GDS triaxial apparatus, and the change of the permeability coefficient of ...
ZHANG Le   +3 more
doaj   +1 more source

Experimental Study on Seepage Characteristics of Fractured Rock Mass under Different Stress Conditions

open access: yesGeofluids, 2021
In order to obtain the mechanical behavior and permeability characteristics of coal under the coupling action of stress and seepage, permeability tests under different confining pressures in the process of deformation and destruction of briquette coal ...
Ma Haifeng   +6 more
doaj   +1 more source

Prediction of permeability coefficient of unsaturated lime-improved loess

open access: yesYantu gongcheng xuebao, 2020
In view of the fact that most loess in the loess regions is in an unsaturated state, lime is used to improve the unsaturated loess to solve the problem of permeability of unsaturated loess.
HU Zai-qiang , LIANG Zhi-chao , GUO -Jing , FENG -Zhe , WANG -Kai , SHE Hai-cheng
doaj   +1 more source

Effect of water head on the permeability of foam-conditioned sands: Experimental and analytical investigation

open access: yesSoils and Foundations, 2023
The water permeability of conditioned soils is one of the most essential properties for Earth Pressure Balance (EPB) tunnelling in coarse-grained soils.
Shuying Wang   +4 more
doaj   +1 more source

Prediction of coefficient of permeability of unsaturated loess with different seepage durations

open access: yesYantu gongcheng xuebao, 2018
The coefficient of permeability of unsaturated loess is very important to seepage calculation and slope instability analysis of loess. Using the direct method to test the coefficient of permeability of unsaturated loess is time-consuming and more ...
CHEN Wen-wu 1, 2, LIU Wei 1, 2, WANG Juan 1, 2, SUN Guan-ping 1, 2, WU Wei-jiang 3, HOU Xiao-qiang 4
doaj   +1 more source

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