Characterization of Coal Porosity for Naturally Tectonically Stressed Coals in Huaibei Coal Field, China

Table 3

Classification of the nanopore structure of deformed coal.

Pore structure type	Distribution range of nanopore width/nm
Mesopore	10~100
Micropore	5~10
Submicropore	2~5
Supermicropore	<2