Zhenzhi Wang

TL;DR: In this article, the authors analyze the physical characteristics of microfractures with X-ray computed tomography (X-ray CT) and fractal theory, identify the effects of coal rank on the physical properties of micro-fracture, and discern the relationship between fractal features and coal permeability.

TL;DR: In this paper, the authors quantitatively studied the fracture structure characteristics in different directions through the given parameters of Fukang mining area, China The aperture, porosity, density and connectivity of coal fractures ratio in parallel bedding plane direction are 131, 112, 161 and 126 times of that in vertical direction.

TL;DR: In this article, the authors investigated the adsorption capacity, swelling effect and permeability characteristic of coal seams with and without tectonic damage, the natural coal and reconstituted coal manufactured via simulating in situ geological conditions were investigated.

TL;DR: In this article, the authors collected 4 types of cubic coal samples (samples cut parallel to face and butt cleats and perpendicular to the bedding plane) from the Fukang mining area in China to investigate the anisotropic characteristics of P-wave velocity, fractures and permeability under varying effective stresses from 3.5 to 8.5

TL;DR: In this article, the authors explored the evolution and formation mechanisms of closed pores, regarding which there is a lack of knowledge and understanding and provided a novel method to investigate the mechanism of geological CO 2 sequestration.