Comparative Analyses Concerning Triaxial Compressive Yield Criteria of Coal with the Presence of Pore Water

Figure 2

Triaxial compressive strength of coal samples and fitted curves of five yield criteria. (a) DT Natural coal. (b) BD Natural coal. (c) XH Natural coal. (d) YC Natural coal. (e) DT Water-saturated coal. (f) DT Seepage coal. (g) BD Seepage coal. (h) XH Seepage coal.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)