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The “Lumbarda” tunnels, more commonly known as “Tunnels”, have been in operation since Saturday morning.Karamanlis Holes», In the direction of Sounio, after the completion of the support works.
They were located 1.5 months ago cracks on the rocks resulting in the situation at the point being particularly dangerous, since there was a fear of peeling heavier stones that could even reach a ton.
The tunnels in Athens-Souniou Avenue (EO91) construction began in 1954, under the ministry of the late Konstantinos Karamanlis.
After the bad weather “Ianos”, which in the Basin hit the eastern suburbs, its competent services Directorate of Metropolitan Infrastructure Management of the Attica Region, found that a capillary crack in the rock had deepened dangerously.
A geotechnical specialist was immediately called in and went to Varkiza on the spot and confirmed that there was a high probability that the rock would dislodge, with the result that the governor of Attica, George Patoulis order the closure of the road and the rapid start of the works.
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The rock could not be cut with explosives because it would affect the entire rock and possibly destroy the entire tunnel.
The experts eventually came up with the uninterrupted cutting method, with a special drill called a wagon drill. Fortunately, the interior of the rock is healthy, so the landmark connecting the capital with Sounio remained intact.
The detached mass fell on the road and shattered. The pieces of rock were used for the wire boxes, the so-called zarzanets. With them, a four-meter-high wall was built on both sides of the road to contain water and stones. A wing wall was placed over the tunnel. That is, a fence to exclude the slightest possibility that stone remains from the cleaning.
Incidentally, safety railings and new curbs were installed, the road was tilted upside down, sidewalks were paved, and LED lighting was installed inside and outside the tunnels.
the CNN Greece he had been at the scene when the road was closed to traffic and had recorded the situation.
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Source: CNN Greece / Evdokia Mytili
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Source: CNN Greece / Evdokia Mytili
The workshops of the Attica region are on site and are doing work.
