Cylindrical Caved Space Stability Analysis for Extension Prediction of Mining-Induced Surface Subsidence

Figure 5

(a) The distribution of caved space, in situ stress, and discontinuities in 3D space. (b) In situ observation for the discontinuities in the undercut in Xiaowanggou iron mine. (c) The orientation of mean maximum horizontal in situ stress (represented by black bar) around Xiaowanggou iron mine.