AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam

Which TBM choice is most appropriate in soft ground where face pressure must be controlled to limit settlement?

An open-face or gripper TBM intended for competent rock An earth-pressure-balance (EPB) or slurry TBM that can maintain face pressure A roadheader with no face support in running sand below the water table Drill-and-blast with no temporary support

Correct Answer:

An earth-pressure-balance (EPB) or slurry TBM that can maintain face pressure

Access more questions from this quiz

Continue to AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam for more practice questions and the full quiz experience.

Access More Questions