世界上已修建了许多海峡隧道,未建的地方也正在积极研究筹划中。日本于20世纪40年代在关门海峡修建的海峡隧道,是世界上最早的海峡隧道,之后又在关门海峡修建了两座海底隧道。经过艰苦努力,日本于1988年在津轻海峡建成了迄今世界上最长的海峡隧道——青函隧道,使本州和北海道之间实现了铁路运输。英法海峡隧道从拿破仑时代(1800年)以来就曾两次开挖,但都停了下 Many strait tunnels have been built in the world and unbuilt areas are under active planning. The Strait Tunnel, built by Japan in the 1940s at the Gate Cross Strait, was the earliest Strait Tunnel in the world, and later two cross-harbor tunnels were constructed at the Cross-Strait of Strait. After painstaking efforts, Japan built the Seokcheon Tunnel, the longest strait tunnel in the world in the Tsugaru Strait in 1988, bringing the railway between Honshu and Hokkaido. The Tunnels of the Anglo-French Channel have been excavated twice since the Napoleonic era (1800), but have stopped