The invention provides a three-
dimensional modeling method for correlation of
coal permeability and pore fracture evolution, and relates to the technical field of three-
dimensional modeling of a
coal structure. Gray
standardization, classification marking and
spatial structure unit identification are carried out on all voxels at each moment, and
voxel-level parameter statistics and
geometric analysis are combined, so that the three-
dimensional modeling method for correlation of
coal permeability and pore fracture evolution is realized. According to the method, the
porosity, the fracture width, the fracture
connectivity and other structural characteristic parameters can be extracted and are dynamically paired with synchronously acquired
physical field parameters, so that the physical accuracy and the
time sequence response capability of the parameters are ensured, the accurate assignment of
voxel-level parameters is also realized, the coal body heterogeneity and the dynamic evolution process are meticulously quantified, and the coal body quality is improved. The
voxel scale permeability calculation method is adopted, the permeability value of each voxel can be calculated at each moment according to the voxel characteristic parameters and the
physical field parameters, permeability distribution in a three-dimensional space is generated, and the
structural evolution process of a coal
rock core sample can be comprehensively captured.