Deformation Rules for Surrounding Rock in Directional Weakening of End Roofs of Thin Bedrocks and Ultrathick Seams

<div>Displacement curve line of primary caving of basic roof.</div>

Advances in Civil Engineering

Figure 11: Deformation Rules for Surrounding Rock in Directional Weakening of End Roofs of Thin Bedrocks and Ultrathick Seams 