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

Table 5

Relative errors for horizontal convergence value in Part I.

Section pile number	Location of measuring points	Model calculation value (mm)	Field monitoring value (mm)	Relative error (%)
YK11 + 931	Arch waist	39.8	35.0	13.7
	Maximum excavation line position	67.1	57.0	17.8
YK11 + 928	Arch waist	15.3	12.0	27.5
	Maximum excavation line position	29.3	26.0	12.7