evaluation of epb tbm performance in mixed ground conditions

This paper studies the performance of soil pressure balance tunnel drilling rig (EPM TBMs)in rock-
Soil interface mixing
Based on the ground of the Singapore deep tunnel sewage treatment system project.
In a uniform rock or soil, there are several methods that can be used to estimate the tunneling performance of the tunnel.
However, the existing models cannot reliably estimate the performance of tunnel concrete in a mixed formation.
The tunnel in this study is at an adverse mixing
Ground conditions.
The geological section and tunnel tunneling operation parameters are compiled in the database, and statistical analysis is carried out.
The influence of different geological surface composition on TBMs performance was studied.
Statistical analysis shows that it is possible to mix
(3) ground characteristic and tunneling rate of working face.
A method to predict the tunnel construction performance in mixed tunnel construction is proposed.
Ground for project planning and optimization.