Analysis of Failure Characteristics and Strength Criterion of Coal-Rock Combined Body with Different Height Ratios

Figure 6

Axial stress-strain curve of coal-rock combination. (a) Axial strain of coal-rock combination under uniaxial loading. (b, c) The axial and circumferential strains and volume strains of coal-rock combined samples when the confining pressure is 5 MPa. (d, e) The axial and circumferential strains and volume strains of coal-rock combined samples when the confining pressure is 10 MPa.

(a)

(b)

(c)

(d)

(e)