Research Article

Estimations of the Jacking Forces of Large-Sized Rectangular Jacking Pipes Based on a Displacement Control Method

Table 2

The details of cases A1 and B1.

Outer/inner size (m)Jacking distance (m)Pipe length (m)Overburden depth (m)Pipe jacking methodLubricants

Case A17.55.4/6.24.11051.53.5Soil pressure balance pipe jackingPlasticizer + bentonite
Case B110.17.25/8.9 6.051051.53.5Soil pressure balance pipe jackingPlasticizer + bentonite