Experimental Investigation of the Use of Expansive Materials to Increase Permeability in Coal Seams through Expansive Fracturing

Figure 10

Variation in displacement of coal-like materials with reaction time of the expansive material. (a)-1 Hydration reaction time 3 h (x direction displacement). (a)-2 Hydration reaction time 3 h (y direction displacement). (b)-1 Hydration reaction time 6 h (x direction displacement). (b)-2 Hydration reaction time 6 h (y direction displacement). (c)-1 Hydration reaction time 10 h (x direction displacement). (c)-2 Hydration reaction time 10 h (y direction displacement).