Mechanical Characteristics and Failure Mechanism of Siltstone with Different Joint Thickness

Figure 4

Stress-strain curves of (a) siltstone, (b) coal, or jointed siltstone with a coal layer of (c) 5 mm, (d) 10 mm, (e) 15 mm, and (f) 20 mm thickness under uniaxial compression.

(a)

(b)

(c)

(d)

(e)

(f)