Скачать или смотреть Mega Project: Africa. The Great Wall of Lagos, Nigeria

The Journal: The Great Wall of Lagos is formidable in its design and already doing a great job of protecting the coastline. Over the last 100 years, pounding waves from the Atlantic Ocean have eroded the land off Lagos, bringing the sea closer to the financial centre of Victoria Island. The threat of serious flooding was a major concern. Before the Great Wall, tidal surges used to regularly cause water and debris to spill over on to the main coastal highway, Ahmadu Bello Way. Today the highway is clear from flooding, already protected, thanks to the development of Eko Atlantic. Before the first of the giant concrete armoured blocks for the Great Wall was lowered into position, its ability to withstand the worst of the Atlantic tidal surges was put to the test. Urban engineers at DHI, the world-renowned Danish hydraulic research centre, carried out extensive scale model trials. Data analysis by computer models showed that the Great Wall could withstand the worst expected storms over 1,000 years.

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