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Ahmed
Hamdy Road Tunnel
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The
Ahmed Hamdy tunnel runs under the Suez Canal north of Suez city
connecting the Sinai peninsula with the the eastern parts of
Egypt. The tunnel was completed in 1983. The
tunnel is 1.64 km with a total length of 4.20 km including the
entrances. Its internal diameter is 10.40 m and having a design
capacity of 300 vehicles per hour in each direction.
The
tunnel was constructed using open face shield tunnelling method.
The tunnel lining consisted of precast reinforced concrete rings,
0.60 m thick having a width of 1.20 m. The route of the tunnel is
in stiff clayey layer. the lowest point in the tunnel is at a
depth of 51 m.
After
10 years of service , the reinforced concrete segments were
deteriorated by the saline water seeping from the joints between
the segments which led to the corrosion of the steel bars. The
rehabilitation works were done by covering the whole surface of
the existing lining with a waterproofing membrane then placing a
45 cm reinforced concrete secondary lining. These works ended in
1995 and the tunnel is now operating successfully.
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