Fracture Morphology Analysis of Frozen Red Sandstone under Impact

Figure 4

Failure modes of saturated red sandstone at different temperatures: (a) 25°C, (b) −5°C, (c) −10°C, (d) −20°C, (e) −30°C, and (f) −40°C.

(a)

(b)

(c)

(d)

(e)

(f)