The fluid flow in fracture porous media plays a significant role in the assessment of deep underground reservoirs, such as through CO2 sequestration, enhanced oil recovery, and geothermal energy development. Many methods have been employed—from laboratory experimentation to theoretical analysis and numerical simulations—and allowed for many useful conclusions. This Special Issue aims to report on the current advances related to this topic. This collection of 58 papers represents a wide variety of topics, including on granite permeability investigation, grouting, coal mining, roadway, and concrete, to name but a few. We sincerely hope that the papers published in this Special Issue will be an invaluable resource for our readers.
Richeng Liu
scanning electron microscope (SEM) images permeability high temperature Darcy’s law confining pressures chemical grouts grain size of sand initial water contained in sand grouted sand macroscopic mechanical behaviors microstructure characteristics ductile failure gas concentration gob-side entry retaining (GER) limestone roof