Predicting Overburden-Induced Failure Height of Large Mining Face in Shallow Coal Seam Based on Half-Plane Theory

Table 3

Table of analysis of overburden three zones.

Three zones	Theoretical value	Measured value	Absolute error	Relative error (%)
Collapse zone (m)	21	19.82	1.18	5.95
Fracture zone (m)	118	117.50	2.50	2.13