{"id":4514,"date":"2026-09-01T14:07:04","date_gmt":"2026-09-01T11:07:04","guid":{"rendered":"https:\/\/bricsmagazine.com\/en\/?p=4514"},"modified":"2026-09-01T14:07:05","modified_gmt":"2026-09-01T11:07:05","slug":"five-minutes-instead-of-forty-china-opens-the-worlds-largest-diameter-tunnel","status":"publish","type":"post","link":"https:\/\/bricsmagazine.com\/en\/main-issue\/agenda\/brics-plus-news\/five-minutes-instead-of-forty-china-opens-the-worlds-largest-diameter-tunnel\/","title":{"rendered":"Five Minutes Instead Of Forty: China Opens The World&#8217;s Largest-diameter Tunnel"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A double-deck underwater <a href=\"https:\/\/www.globaltimes.cn\/page\/202608\/1368952.shtml\">tunnel<\/a> with the world&#8217;s largest diameter has been put into operation in Jinan, East China. Crossing the Yellow River by car now takes five minutes instead of the previous 30-40.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The tunnel is 5,755 meters long, with a designed speed of 60 kilometers per hour. Traffic runs on two levels within a single bore. It is China&#8217;s first tunnel of this type passing beneath the Yellow River, with the route crossing difficult sections including the embankment and the riverbed itself.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Engineers had to solve 28 major technical challenges: ensuring excavation stability, controlling settlement beneath the embankment, preventing uplift of large-section tunnel segments, and arranging green treatment of massive volumes of slurry (waste).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Shield tunneling technology relies on a tunneling shield &#8212; a special metal structure that holds back the surrounding soil. The shield section, stretching about 3,290 meters, was built using a tunnel boring machine with an excavation diameter of 17.5 meters. The maximum excavation rate reached 18 meters per day, with a monthly advance of 426 meters &#8212; a world record for 17-meter-class machines.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Jinan tunnel is not the first application of this technology. On July 30, Linghang, the world&#8217;s largest-diameter high-speed-rail shield tunneling machine, successfully completed the underwater section of the Chongming-Taicang Yangtze River Tunnel. This lays the groundwork for China&#8217;s first high-speed rail line to cross beneath the river without slowing down, at 350 kilometers per hour.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to Chinese experts, shield tunneling machines are a core piece of equipment for underground engineering. The industry is moving from large-scale application toward higher levels of efficiency and global competitiveness.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A double-deck underwater tunnel with the world&#8217;s largest diameter has been put into operation in Jinan, East China. Crossing the Yellow River by car now takes five minutes instead of the previous 30-40. The tunnel is 5,755 meters long, with a designed speed of 60 kilometers per hour. Traffic runs on two levels within a [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1042],"tags":[],"country":[],"authors":[],"class_list":["post-4514","post","type-post","status-publish","format-standard","hentry","category-brics-plus-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Five Minutes Instead Of Forty: China Opens The World&#039;s Largest-diameter Tunnel - BRICS Business Magazine - EN<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bricsmagazine.com\/en\/main-issue\/agenda\/brics-plus-news\/five-minutes-instead-of-forty-china-opens-the-worlds-largest-diameter-tunnel\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Five Minutes Instead Of Forty: China Opens The World&#039;s Largest-diameter Tunnel - BRICS Business Magazine - EN\" \/>\n<meta property=\"og:description\" content=\"A double-deck underwater tunnel with the world&#8217;s largest diameter has been put into operation in Jinan, East China. 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