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

Table 4

Comparison of calculated and measured values of each method.

Types of methods	Maximum caving depth (m)	Difference from measured value (m)
Average value of field measurement	1.82	0
Compression-shear method	4.96	3.14
Previous sliding method	33.37	31.55
Bishop strip method	1.63	0.19