Results 11 to 20 of about 114,403 (120)

Determination Permeability Coefficient from Piezocone

open access: yesAdvances in Materials Science and Engineering, 2014
The permeability coefficient of soil profile is one of the problems concerned by engineers, and the determination of permeability coefficient method mainly relies on the laboratory permeability test and field pumping test, but these tests are time ...
Qiang Wang, LiYuan Tong
doaj   +1 more source

Gas permeability of intact Q3 loess under isotropic stresses

open access: yesYantu gongcheng xuebao, 2017
The tests are performed to study the gas permeability of unsaturated intact Q3 loess with various water contents under different isotropic stresses using the improved triaxial gas permeability equipment.
CHEN Cun-li 1, 2, ZHANG Deng-fei 1, 2, ZHANG Jie 3, CHEN Hui 1, YANG Fan 1, WU Kang 1
doaj   +1 more source

Permeability coefficient investigation based on fractal characteristics of porous media soil

open access: yesShuili Shuiyun Gongcheng Xuebao, 2022
Permeability coefficient of soil is extremely important to dike and dam engineering. Scale-invariant space of seepage failure testing soils were statistically analyzed by multifractal dimensions, which shows that fine particle content is the major factor
WANG Yu   +3 more
doaj   +1 more source

Empirical formula for permeability coefficient of coarse grained soil based on gradation equation and its verification

open access: yesYantu gongcheng xuebao, 2020
The coarse-grained soil is widely used in earth-rock dams and road projects. Its seepage characteristics are related to the stability and safety of the projects.
BAO Meng-die 1, 2, ZHU Jun-gao 1, 2, WU Er-lu 1, 2, WANG Long 1, 2, CHEN Ge 1, 2
doaj   +1 more source

Assessment of gas permeability coefficient of porous materials

open access: yesJournal of Sustainable Mining, 2017
The results of experimental research upon the assessment of gas permeability of porous materials with respect to the gas flow. The conducted research applied to natural materials with an anisotropic gap-porous structure and - for comparative purposes ...
Grzegorz WaƂowski
doaj   +1 more source

Effects of Velocity and Permeability on Tracer Dispersion in Porous Media

open access: yesApplied Sciences, 2021
During micro-scale tracer flow in porous media, the permeability and fluid velocity significantly affect the fluid dispersion properties of the media. However, the relationships between the dispersion coefficient, permeability, and fluid velocity in core
Yulong Yang   +9 more
doaj   +1 more source

Investigation on Calculation Method of Permeability Coefficient in the Consolidation Process of Cohesive Soil

open access: yesGeofluids, 2022
In order to study the permeability characteristics of cohesive soil in the consolidation process more accurately, in this work, the pores occupied by the combined water were defined as invalid pores, and the effective pores and ineffective pores were ...
Mei Zhou   +4 more
doaj   +1 more source

A permeability evolution model of coal particle from the perspective of adsorption deformation

open access: yesEnergy Science & Engineering, 2021
As an important indicator, permeability can predict the gas drainage yield and prevent the mine gas disasters. We first reviewed our previous inversion method to investigate permeability coefficient of gas in coal particles; however, the relationship ...
Wei Liu   +5 more
doaj   +1 more source

Calculation of permeability coefficient of coal seam under rapid measurement conditions [PDF]

open access: yesE3S Web of Conferences, 2019
In order to achieve rapid determination of coal seam permeability, the calculation method of coal seam permeability coefficient was studied. Based on the Darcy's law in the flow of gas in the coal seam, the relationship equation between the gas pressure ...
Yang Manzheng, Li Bingrui, Li Shubo
doaj   +1 more source

Influence mechanism of permeability coefficient in homogeneously saturated strata on responses of deep tunnels under incidence of SV waves

open access: yesYantu gongcheng xuebao, 2022
For the seismic analysis of underground structures in saturated sites, the coupling effects of pore water and soil skeleton are determined by the permeability coefficient of strata, which is one of the key parameters in the interaction analysis between ...
YU Hai-tao 1, WANG Zhi-kun 2, LIU Zhong-xian 3
doaj   +1 more source

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