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Sonic boom

Industry News

Unique tunnel portal completed to solve high-speed rail’s ‘sonic boom’

HS2 contractors have completed work on a pair of innovative extensions to the southern portal of its longest tunnel to eliminate the possibility of ‘sonic boom’ being created by high-speed trains entering at 200mph. The structures, built at the southern end of the railway’s 10-mile Chiltern Tunnel to the north-west Read more…

By Deborah, 2 months ago
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