Breaking and Instability Movement Characteristics of High-Position Double-Layer Hard Thick Strata due to Longwall Mining

Figure 10

Variation curve of typical support pressure monitored in June 2014 [24]. (a) Support 5#. (b) Support 15#. (c) Support 25#. (d) Support 55#. (e) Support 75#. (f) Support 115#.

(a)

(b)

(c)

(d)

(e)

(f)