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

Figure 13

Case B1’s grouting pressure changes with time in the jacking return times. Note: data were read from each measuring point of the monitoring section every minute, and a total of 9 grouting pressure values were obtained. The weighted average value of 9 grouting pressure values is taken as the representative value of the grouting pressure of pipe jacking at this moment.