AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam

What is the purpose of ground freezing as a tunnel or shaft ground-control method?

To heat the face so shotcrete never needs curing To temporarily strengthen and cut off groundwater by freezing pore water into an ice-soil wall around the excavation To replace the need for any lining after the ice melts To classify the heading as gassy under OSHA

Correct Answer:

To temporarily strengthen and cut off groundwater by freezing pore water into an ice-soil wall around the excavation

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