Research Article

Theoretical Investigation of the Sliding Instability and Caving Depth of Coal Wall Workface Based on the Bishop Strip Method

Table 2

The geometric parameters of coal band and the calculation results of qm.

Number of coal strip (m)hm (m) (°)qm (MPa)

13.880663.36
23.420674.21
32.918696.40
42.367717.79
51.572739.42
61.0457511.35
70.37813.62