CHINA Railway’s 14th Bureau Group completed the 10km Zhanjiang Bay undersea tunnel on March 15. A single shield tunnel boring machine (TBM) named Yongxing took 33 months to finish the single bore tunnel that will accommodate a double-track railway.<\/p>\n
Three quarters of the tunnel\u2019s total length of 9640m was bored by the TBM, comprising 2500m of undersea tunnel and 5051m beneath dry land. The project is China’s longest high-speed undersea railway tunnel, that used a single TBM to excavate continuously from one end to the other.<\/p>\n
The 14.33m-diameter TBM worked at a depth of up to 52m below the seabed in Zhanjiang Bay in southern China, excavating at an average rate of 260m per month and achieving a maximum of 510m.<\/p>\n
The tunnel is a key part of a new 401km high-speed line linking Guangzhou and Zhanjiang in Guangdong province. Due for completion by the end of 2025, trains operating at up to 350km\/h will cut journey times between the two cities to 90 minutes from the current 2h 30min.<\/p>\n
The Chinese government says that the new line will further improve the coastal high-speed railway corridor, allowing the creation of a comprehensive transport network in the Guangdong-Hong Kong-Macau Greater Bay Area while simultaneously boosting economic development in the region.<\/p>\n
For detailed data of projects around the globe, subscribe to IRJ Pro<\/a>.<\/em><\/p>\n The post China completes Zhanjiang marine tunnel<\/a> appeared first on International Railway Journal<\/a>.<\/p>","protected":false},"excerpt":{"rendered":" CHINA Railway’s 14th Bureau Group completed the 10km Zhanjiang Bay undersea tunnel on March 15. A single shield tunnel boring machine (TBM) named Yongxing took […]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[47,5],"tags":[],"class_list":["post-20961","post","type-post","status-publish","format-standard","hentry","category-rail-news","category-transport"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t