Research on Surface Subsidence of Long-Span Underground Tunnel

Table 8

Change of lateral displacement of a monitoring section in Wannianquan Road Station.

Test group	A	B	C
Accumulated settlement value after excavation (mm)	−1.33	−2.34	−23.26
	−1.12	−5.39	−17.51
	2.21	0.88	−1.86