Inside the World’s Longest Underwater Tunnel | How the $15B Channel Tunnel Was Built
Автор: Satisfactory Flow
Загружено: 2025-12-29
Просмотров: 421
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Step inside the world’s longest underwater tunnel and discover how one of the greatest engineering feats in history was built beneath the sea. In this documentary-style video, we explore the $15 billion Channel Tunnel, also known as the Eurotunnel, which connects the United Kingdom and France under the English Channel.
From early planning and geological surveys to advanced tunnel boring machines, ventilation systems, safety design, and long-term maintenance, this video breaks down the engineering challenges faced while constructing a tunnel under immense water pressure. Learn how engineers overcame unstable seabed conditions, precision alignment over 50 km, and the logistics of building deep below the ocean floor.
This video is perfect for fans of mega projects, civil engineering, infrastructure documentaries, and how-it-was-built content. If you’re fascinated by underground construction, underwater tunnels, or large-scale engineering systems, this deep dive will show you how the impossible became reality.
world’s longest underwater tunnel, channel tunnel engineering, eurotunnel construction, underwater tunnel construction, how the channel tunnel was built, tunnel boring machines, megaproject engineering, underground infrastructure, civil engineering documentary, engineering marvels
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