A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway

Figure 11

The experiment validation of oblique section failure of thin immediate roof under uniform load. (a) The test device and the failure of the thin immediate roof in the literature [20]. (b) The test device and the failure of the thin immediate roof in the literature [1]. (c) The roof collapse of the Great Wall Number #3 coal mining field.

(a)

(b)

(c)