Optimization Effects of Load Reduction for Earth Pressure on High-Filled Cut-and-Cover Tunnels Using the Discrete Element Method

Table 1

Test schemes design.

Cases	The parameters	Working conditions
C1	Cross section optimization coefficient	0 (rectangle)	0.4	0.7	1.0	∞ (circle)
C2	EPS density (kg/m^3)	12	15	20	30	-
C3	EPS laying position (m)	0	0.02	0.05	0.08	-
C4	Concrete wedges height (m)	0.20	0.26	0.32	0.38	-
C5	Concrete wedges width (m)	0.12	0.17	0.22	-	-