Accurate prediction of the water-bearing capacity aquifers is crucial for protecting surface ecological environment and ensuring safety during coal mining. In this study, a macro–micro combination was used to investigate bedrock aquifers. At micro-level, micro pore parameters various sandstones were determined through cast sheeting. macro-level, porosity water absorption rate experimentally. Af...

Quantitative prediction of petrophysical properties for reservoir rocks frequently employs representative microscopic models of the pore space as input. Recently digital imaging techniques such as microtomography have been used to provide void space images at the resolution of a few microns. However, this resolution may be insufficient to capture some smaller structures, particularly in carbona...

The paper presents two-scale numerical algorithms for stress–strain analysis of porous media featured by self-contact at pore level. porosity is constituted as a periodic lattice generated representative cell consisting elastic skeleton and void pore. Unilateral frictionless contact considered between opposing surfaces the For homogenized model derived in our previous work, we justify increment...

The presence of pore fluids in geomaterials can alter deformation processes and facilitate or delay material failure. Dilation/contraction of geomaterials in the course of inelastic undrained deformation causes a reduction/increase in pore pressure altering the effective compressive stress. This results in an increase/decrease in shear stress that can be sustained by the material over the corre...

Within the context of immiscible biphasic flow in porous media, when nonwetting fluid invades pore spaces which are a priori saturated with wetting fluid, capillary forces dominate if network is formed by fine-grained soils. Owing to cohesion-less frictional behavior such soils, force–driven fracturing phenomenon has been put forward some researchers. Unlike purely mechanistic tensile mode-I th...

Abstract For fracture propagation, a novel DEM-based pore-scale thermal-hydro-mechanical model of two-phase fluid flow with heat transfer in non-saturated porous materials low porosity was developed. Numerical computations were performed for bonded granular specimens, using DEM fully coupled CFD (based on network) and transfer, which integrated discrete mechanics at the meso-scale. Both (diffus...

Microwave (MW) drying method was adopted to enhance the liquid permeability of Scots pine lumber. Structure changes were characterized by stereoscope microscope, scanned electron microscope (SEM) and transmission (TEM) examination. Pore parameters before after MW treatment detected mercury intrusion porosimetry (MIP) method, effect structure on analyzed. As SEM TEM examination results shown, ma...

Catalyst deactivation involves a complex interplay of processes taking place at different length and time scales. Understanding this phenomenon is one the grand challenges in solid catalyst characterization. A process contributing to carbon deposition (i. e., coking), which reduces activity by limiting diffusion blocking active sites. However, characterizing coke formation its effects remains c...

Pores with fractal morphologies have been observed and characterized in flat giant unilamellar vesicles as a response to moderate tensile stress originating from membrane adhesion solid supports. The ruptures, or pores, occur spontaneously grow step-wise tension builds up between intermittent pore expansion events. We focus on the dynamics of fractures determine their size, frequency intermitte...