Effect of Acid and Alkaline Environment on Dynamic Strength and Porosity Characteristics of Bursting Liability Coal

Figure 9

Dynamic tensile strength and its deterioration of coal samples with different bursting liabilities: (a)–(c) pH = 7; (d)–(f) pH = 9; (g)–(i) pH = 4.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)