Study of Deformation Behaviors and Mechanical Properties of Central Diaphragm in a Large-Span Loess Tunnel by the Upper Bench CD Method

Table 3

The accumulated crown settlement value at the monitoring section in Wangcun tunnel.

Pile number	Part I in the upper bench
	Vault (A) (mm)	Left arch waist (B) (mm)	Central diaphragm waist (C) (mm)	Maximum excavation line position at left arch (D) (mm)	Maximum excavation line position at central diaphragm (E) (mm)
YK11 + 937	131	131	—	—	25
YK11 + 931	—	67	60	—	54
YK11 + 928	51	52	41	58	45
YK11 + 925	38	34	36	46	13
Pile number	Part II in the upper bench
	Vault (F) (mm)	Right arch waist (G) (mm)	Central diaphragm waist (C) (mm)	Maximum excavation line position at right arch (H) (mm)	Maximum excavation line position at central diaphragm (E) (mm)
YK11 + 937	35	53	—	40	25
YK11 + 931	24	43	60	65	54
YK11 + 928	21	23	41	36	45
YK11 + 925	19	16	36	19	13