Study on Microstructure Differences of Coal Samples before and after Loading

Table 1

Pore distribution of coal.

Pore classification	Microporous	Small pore	Mesopore	Macropore	Total mercury intake (mL/g)	Mercury withdrawal (mL/g)	Porosity (%)
Specific surface area m^2/g	<10 nm	10–100 nm	100–1000 nm	>1000 nm	0.0811	0.063	9.18
	4.69	1.81	0.018	0.003
	71.9%	27.8	0.276%	0.046%