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Lock #2 Concrete
Demolition
At location 2 near Desha,
Arkansas the existing concrete gate and entrance sills had to be removed in
order to let sufficient water into the powerhouse. These were left in
place during the powerhouse construction in order to keep the lock stable
until construction was complete. The sills were drilled and blasted
after the powerhouse was complete. The newly constructed powerhouse was
only about 50 feet from the front of the concrete gate sill.
The concrete was poured with
the existing walls of the lock during construction and had to be blasted
without damaging any of the concrete to remain. At lock #1 this was all
done underwater. |