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Analytical Solutions of a Space-Time Fractional Derivative of Groundwater Flow Equation
Published 2014-01-01“…The classical Darcy law is generalized by regarding the water flow as a function of a noninteger order derivative of the piezometric head. …”
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Damage identification in beams using additional rove mass and wavelet transform
Published 2019-06-01Get full text
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Mechanical Constitutive and Seepage Theoretical Model of Water Storage Media Based on Fractional Derivative
Published 2022-01-01“…The nonlinear stress-strain model is verified by mechanical experiments, physical simulation tests, and field measured data, and parameter sensitivity analysis is performed. …”
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Air permeability of thermally modified hemlock wood
Published 2022-11-01“…ANOVA followed by the Duncan test revealed that thermal treatment at 212 °C and 230 °C significantly increased air permeability, whereas it was insignificant at 170 °C. …”
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An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone
Published 2019-01-01“…Seepage properties of sandstone and mudstone were tested on specimens under six axial displacement levels. …”
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Effect of touristic activities on seabirds’ habitat selection on sandy beaches
Published 2023-10-01Get full text
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Effects of Initial Porosity and Water Pressure on Seepage-Erosion Properties of Water Inrush in Completely Weathered Granite
Published 2018-01-01“…In order to investigate the water inrush mechanism in completely weathered granite, a large-scale triaxial testing system is designed and manufactured, which can induce the mass transfer and monitor the flow properties. …”
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Experimental and analytical investigation of hydraulic conductivity, energy dissipation, and drag forces in gradually varied flow conditions through rockfill media
Published 2024-12-01“…The obtained results showed that the Darcy-Weisbach friction factor ranged between approximately 0.8 and 0.2 with surfacing velocity. …”
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New Understanding of Transient Pressure Response in the Transition Zone of Oil-Water and Gas-Water Systems
Published 2018-01-01“…Well test analysis requires a preselected model, which relies on the context input and the diagnostic result through the pressure logarithmic derivative curve. …”
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Experimental Study on Gas–Water Relative Permeability Characteristics of Tight Sandstone Reservoir in Ordos Basin
Published 2022-01-01“…First, the pressure value obtained from the experiment, when the gas permeability no longer changed with the average pressure on the rock core, was set as the testing pressure. Then, the gas was injected under constant pressure, and the water was injected with a constant flow rate. …”
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Predicting the critical drainage induced by soil seepage failure during pumping in foundation pit construction
Published 2025-01-01“…However, the critical pumping quantity is a key parameter for pumping safety in foundation pit construction and there is no effective method to calculate or test this parameter. Based on Darcy’s law and the equivalent infinitesimal formula, and the formula for calculating the permeability coefficient of pumping tests recommended by the specification for borehole pumping test of hydropower projects (NB/T 35103—2017), this study deduced the expressions of critical pumping quantity of the seepage failure under four conditions, including submersible incomplete hole, submersible integral hole, confined water incomplete hole and confined water integral hole. …”
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Experimental Investigation of Water-Sand Mixed Fluid Initiation and Migration in Filling Fracture Network during Water Inrush
Published 2021-01-01“…In addition, the change rules of the mass loss characteristics and porosity of the samples with time were tested successfully. The calculation methods of the permeability and non-Darcy factor of the filling fracture network were also determined.…”
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Grouting Design of Rich Water Tunnels and the Calculation of Distance between Annular Blind Pipes
Published 2020-01-01“…First, the groundwater drainage system is constructed. Based on Darcy’s law and the law of conservation of mass, the formula for calculating the seepage discharge and the seepage pressure with the parameters of annular blind pipe spacing is derived. …”
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Analysis of Thermal Stimulation to Enhance Shale Gas Recovery through a Novel Conceptual Model
Published 2019-01-01“…A series of synthetic tests are designed to demonstrate the model performance. …”
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Experimental Investigation on Nonlinear Flow Anisotropy Behavior in Fracture Media
Published 2019-01-01“…A series of flow experiments were performed on matched fractures to study the problem of non-Darcy flow in fractured media. Five rock fractures of different roughness were generated using indirect tensile tests, and their surface topographies were measured using a stereo topometric scanning system. …”
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A Gas Seepage Modeling Study for Mitigating Gas Accumulation Risk in Upper Protective Coal Seam Mining Process
Published 2018-01-01“…The developed GSM was tested for calculating gas emission quantity from the PCSM process by utilizing the actual geological condition data of a coal mine, which is located in Hancheng, China. …”
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