Surface Movement and Deformation Law Caused by Different Coal Pillar Stagger Distances in Strip Filling IoT-Enabled Sustainable Mining

Figure 10

Relationship between the maximum surface movement and the number of mining layers under layout patterns of different staggered coal pillars (horizontal coordinates 1 for mining 5# coal single layer; 2 for mining 5# coal and 8# coal two layers; 3 for mining 5# coal, 8# coal, and 12-1# coal three layers).