连接英伦三岛和欧洲大陆的英吉利海峡海底隧道,今年5月6日正式建成通车。从此,天堑变通途,英、法两国人往来,只需驱车35分钟;如果乘坐高速列车,3个小时即可从伦敦直达巴黎,比乘飞机还要快1个多小时。英吉利海底隧道全长50.5公里,其中海底部分长37公里。它由两条火车隧道和1条服务隧道组成。整个工程历时6年,耗资高达150亿美元。它的建成通车,无疑是人类工程史上的一大奇迹。与海峡两岸的轮渡和航空运输相比,海底隧道的载运量和时效均优于前者;与在海峡或江河上建桥相比,海底或江河水下隧道的成本相对较低,又没有净空(即桥下允许通行高度)限制——由于这些优点,发展海底(水下)隧道受到世界各国的重视。除了英吉利海底隧道外,在亚洲的对马海峡、欧洲和非洲之间的直布罗陀海峡也有两条海底隧道将于今后10年内诞生。其中总长250余公里的日韩隧道,不论规模与长度,都将是世界上无与类比的。而直布罗陀海底隧道长约50公里,由两条公路隧道和1条铁路隧道 The Channel Tunnel, connecting the British Isles and the European continent, was officially opened to traffic on May 6 this year. Since then, the moat cut thoroughfare, Britain, France, the two countries only need to drive 35 minutes; If you take the high-speed train, 3 hours from London to Paris, even faster than the aircraft more than 1 hour. The English sea tunnel covers a total length of 50.5 kilometers, of which 37 kilometers long sea. It consists of two train tunnels and a service tunnel. The entire project lasted 6 years, costing as much as 15 billion US dollars. Its opening to traffic is undoubtedly a miracle in the history of human engineering. Compared with the ferry and air transport across the Taiwan Strait, the volume and timeliness of the cross-harbor tunnel are better than the former; the cost of the subsea or river tunnel is relatively low and there is no headroom That is, the height allowed under the bridge) Restrictions - Due to these advantages, the development of submarine (underwater) tunnels has attracted the attention of all countries in the world. In addition to the British Cross Harbor Tunnel, two cross-harbor tunnels will also be set up over the next 10 years in the Strait of Gibraltar between Asia, the Strait of Gibraltar between Europe and Africa. The total length of more than 250 kilometers of the tunnel between Japan and South Korea, regardless of size and length, will be the world's analogy. The Gibraltar Cross Harbor Tunnel is about 50 kilometers long and consists of two road tunnels and a railway tunnel