The behavior of a particle mixture composed short fibers and silicon carbide powder in variable proportions has been experimentally investigated. study shows that the hydrodynamic bed initially is affected as soon few percent are added. minimum fluidization velocity (Umf) globally lowered intrinsic properties porous medium (equivalent diameter, porosity, flow coefficients…) altered. Several equ...

Borehole pre-drainage is an important technical means to control a coal mine gas disaster. In order determine the optimal parameters of Dashucun mine, damage permeability evolution model was established based on deformation, considering adsorption and desorption Klinkenberg effect, fluid-structure coupling seam containing by combining deformation equation mass conservation equation. COMSOL soft...

The mechanic and permeability behavior in sandy mudstone is crucial to hazard prevention safety mining. In this study, investigate the evolution characteristic of mechanical properties subjected loading in-site stress, a series triaxial compression–seepage experiments are performed. increase decrease strength gradually transformed responding confining stress from 5 15 MPa, which corresponds tra...

The permeability characteristics of natural fracture systems are crucial to the production potential shale gas wells. To investigate behavior a regional fault that is located within Wufeng Formation, China, samples with micro-fractures was measured at different confining pressures and complemented helium pycnometry for porosity, computed micro-tomographic (µCT) imaging, comparison well testing ...

The pre-drainage of coalbed methane through boreholes in the bottom drainage roadway (BDR) is key measure to prevent and control coal gas outburst. Different arrangement layers BDR will make a difference range drilling angle affect extraction effect. In this paper, mathematical model rock loose circle area around elliptical was constructed. Meanwhile, fluid–solid coupling constructed by using C...

The guaiacol adsorption capacity of several Y zeolites with different physicochemical properties was tested by performing breakthrough experiments, in order to investigate the on Fluid Catalytic Cracking catalysts during bio-oils/FCC feedstocks co-processing. X-Ray diffraction, nitrogen sorption measurements and pyridine followed Infrared Spectroscopy were used determine framework Si/Al ratio, ...