Shiziyang Tunnel
The Shiziyang Tunnel is a high-speed railway tunnel under Shiziyang the northern part of the Pearl River estuary in China.[1]
Route
The 10.8 km long tunnel is part of a 140 km high-speed line from Guangzhou to Shenzhen and Hong Kong. It is designed for speeds of up to 350 km/h - the fastest underwater tunnel in the world.[2] as well as being China's longest underwater tunnel.[3] This allows rail journeys between Guangzhou and Hong Kong to take only 40 minutes – much faster than the previous 2-hour journey. The Guangzhou–Shenzhen–Hong Kong express rail link is part of a broader expansion of high-speed rail in China; journeys from Beijing to Hong Kong will take only 8 hours.[4]
Construction
Construction began in November 2007, with a budget of CNY2.4 billion;[5] the tunnel was completed in 2011, and passenger services began on 26 December 2011.[4] Unusually, the tunnel boring machines were designed to be dismantled inside the tunnel.[5]
References
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