Handling pressurized slurry during cutterhead maintenance in a Slurry TBM requires strict safety protocols and procedures to prevent uncontrolled releases, maintain face stability, and protect personnel. The first step is to reduce the slurry pressure in the excavation chamber to a safe level. This is typically done by gradually pumping the slurry out of the chamber while monitoring the face stability. The pressure is reduced to a point where it is safe for personnel to enter the chamber, but still sufficient to provide some support to the tunnel face. Next, the cutterhead is locked in place to prevent it from rotating during maintenance. Mechanical l....
Log in to view the answer
