"수심 110m, 유럽도 일본도 포기했다" 경험 제로 한국이 단번에 통째로 뚫어버린 해저터널의 정체

#UnderseaTunnel, #KoreanConstruction, #GadeokTunnel, #EurasiaTunnel, #MokpoJeju Korea, with virtually zero experience, pierced through a sea 110 meters deep in a single go—a feat that even the world's strongest construction powerhouses had to shake their heads at. From Gadeok and Boryeong to Istanbul, London, and Iraq, everything about Korean undersea tunnel technology. ** 📌 Topics Covered in This Video Three reasons why undersea tunnels are fundamentally different from land tunnels (water pressure, infinite flooding, and impossibility of escape) Gadeok Immersed Tunnel: How Daewoo E&C, with zero experience, achieved 5 Guinness World Records as the world's first open-sea immersed tunnel The reality of "assembling Lego with eyes closed": fitting 18 50,000-ton concrete caissons with an error margin of less than 5cm Boryeong Undersea Tunnel: Completed with zero leakage across the entire 6.9km section using Hyundai E&C's IMG method; the story of how island children's school commutes changed Istanbul Eurasia Tunnel: SK E&C transformed from a subcontractor to a project owner by completing the world's first double-deck undersea automobile tunnel three months ahead of schedule and without accidents From London Silver Town (opening April 2025) to Iraq's Al Faw Port, Korea's seas are appearing on the world map Why the world calls Korea when the TBM equipment is German — The real difference between machine and skill At the Tongyeong Forced Labor Undersea Tunnel in 1932 A Reversal After 90 Years, and the Questions of the Mokpo-Jeju Project: 27 Trillion Won & B/C 0.78 ⏱️ Chapters 0:00 The Country That Drilled Through the Entire Underwater World 0:45 3 Reasons Why the Underwater World Is Hell 4:26 First Challenge: Gadeok — A World Record Set by Zero Experience 8:36 Boryeong — Zero Leaks, Changing the Mornings of Island Children 12:17 The World Calls Korea — Istanbul, London, Iraq 16:40 An Inconvenient Truth — The Knife Is German 20:48 A 90-Year Reversal and the Questions of 27 Trillion Won 💡 Reference Data Sources Ministry of Land, Infrastructure and Transport, Korea Institute of Construction Technology, Official Data from Daewoo E&C, Hyundai E&C, SK E&C, Guinness World Records, International Tunnel Association (ITA) 🔔 If this video was helpful, subscribing and liking would be a great help!