Analysis of Strata Behavior Process Characteristics of Gob-Side Entry Retaining with Roof Cutting and Pressure Releasing Based on Composite Roof Structure

Figure 5

Numerical calculation results: mudstone layer located at (a) 0-1 m above the working face roof, (b) 1-2 m above the working face roof, (c) 2-3 m above the working face roof, (d) 3-4 m above the working face roof, (e) 4-5 m above the working face roof, (f) 5-6 m above the working face roof, (g) 6-7 m above the working face roof, and (h) 7-8 m above the working face roof.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)