Fig. 6

Deflection curve diagram of key strata deformation in the noncrushing zone of the rib. (a) Full deflection curve. (b) Deflection curve of the fluctuation Sect. (25 ~ 55 m).

Deflection curve diagram of key strata deformation in the noncrushing zone of the rib. (a) Full deflection curve. (b) Deflection curve of the fluctuation Sect. (25 ~ 55 m).