Analysis of the Pore Structure and Fractal Characteristics of Coal and Gas Outburst Coal Seams Based on Matrix Compression Correction

The comparative analysis of coal samples under different gas occurrence conditions systematically reveals the pore structure characteristics and outburst seams. functional relationship between R0,max Kc was clarified using mathematical statistical methods, fractal seams were analyzed on basis modified mercury pressure data analysis. results show that is consistent with y = 1.59x−0.48, when inlet 10~120 MPa, sample most affected by matrix compression effect. average volume specific surface area 41.71% 23.09%, which greater than those non-outburst samples, respectively, provided mining micropores 46.24% 81.67%, respectively. dimension, D, seam increased increase in metamorphism, compared low mines, dimension mines higher, influence effect more obvious, heterogeneity stronger.