Experimental Study on the Influence of Moisture Content during Gas Depressurization Extraction

Figure 6

Relationships between volumetric strain-gas pressure and K during gas depressurization extraction for coal samples with moisture contents of (a) 3.5%, (b) 6.3%, (c) 9.8%, and (d) 12.7%.

(a)

(b)

(c)

(d)