Functional Catastrophe Analysis of Collapse Mechanism for Shallow Tunnels with Considering Settlement

Table 2

The impending roof failure with regard to different parameters.

	kN/m^3		m	m
0.9	0.5	0.2	0.1	100	16	2.5	1.0092	7.4688
0.8	0.5	0.2	0.1	100	16	2.5	2.1009	8.0279
0.7	0.5	0.2	0.1	100	16	2.5	3.1228	8.5869
0.6	0.5	0.2	0.1	100	16	2.5	4.0889	9.1459
0.7	0.5	0.1	0.1	100	16	2.5	3.0639	9.7330
0.7	0.5	0.2	0.1	100	16	2.5	3.1228	8.5869
0.7	0.5	0.3	0.1	100	16	2.5	3.1596	7.7074
0.7	0.5	0.4	0.1	100	16	2.5	3.1852	6.9660
0.7	0.5	0.6	0.1	100	16	2.5	3.2173	5.7223
0.7	0.5	0.8	0.1	100	16	2.5	3.2341	4.6738
0.7	0.5	0.2	0.1	100	16	2.5	3.1228	8.5869
0.7	0.5	0.2	0.2	100	16	2.5	2.9906	8.5869
0.7	0.5	0.2	0.3	100	16	2.5	2.8433	8.5869
0.7	0.5	0.2	0.4	100	16	2.5	2.6775	8.5869
0.7	0.5	0.2	0.1	100	14	2.5	2.6359	8.3167
0.7	0.5	0.2	0.1	100	16	2.5	3.1228	8.5869
0.7	0.5	0.2	0.1	100	18	2.5	3.5168	8.8107
0.7	0.5	0.2	0.1	100	20	2.5	3.8430	9.0000