Movement Laws of Overlying Strata above a Fully Mechanized Coal Mining Face Backfilled with Gangue: A Case Study in Jiulishan Coal Mine in Henan Province, China

Figure 10

Movement of overlying strata when the working face advances for 100 m under the elastic modulus of gangue of 1 GPa. (a) Displacement vector of surrounding rock. (b) Distribution of vertical stress.

(a)

(b)