Study of the Indoor Model Test and CEL Simulation of Jacking Force in the Vertical Tunnelling Method

Table 1

Geometric values between the prototype and the model.

Geometric values	Geometric parameter ratio	Prototype scale (m)	Model scale (m)
Model box length	1 : 14	16.8	1.20
Model box width	1 : 14	14	1
Model box height	1 : 14	14	1
Horizontal tunnel outer diameter	1 : 14	6.3	0.45
Horizontal tunnel length	1 : 14	14	1
Overburden soil height	1 : 14	5.95	0.425
Standpipe outer diameter	1 : 14	1.82	0.13