Collapsed Shape of Shallow Unlined Tunnels Based on Functional Catastrophe Theory

Table 5

Comparison of the numerical simulation and analytical results.

	Equation	Results	Gain coefficient	Offset on axis	Power	Adj. -square
Result of curve fitting			2.15	0.94	1.93	0.97
Analytical result			2.22	1.03	2.00
Percentage difference			3.15%	8.74%	3.50%