Three-Dimensional Upper Bound Limit Analysis on the Collapse of Shallow Soil Tunnels considering Roof Stratification and Pore Water Pressure

Table 1

Comparison of calculation results.

								Reference [23] (m)			This paper (m)
		(kPa)	(kPa)	(kPa)	(kPa)	(kN/m^3)	(kN/m^3)
1.8	1.6	35	50	45	60	17	21	4.5130	6.4319	10.2440	4.5130	6.4319	10.2440
1.5	1.5	10	50	20	60	20	20	2.8224	5.2982	13.4833	2.8224	5.2982	13.4833
1.7	1.5	45	55	60	70	20	21	5.2081	7.1400	11.6921	5.2081	7.1400	11.6921
1.6	1.4	30	40	50	60	18	20	3.6839	5.4900	10.5195	3.6839	5.4900	10.5195
1.4	1.6	40	30	60	50	20	18	3.9801	5.2176	9.9583	3.9801	5.2176	9.9583