{"id":11858,"date":"2023-06-18T05:36:11","date_gmt":"2023-06-18T05:36:11","guid":{"rendered":"https:\/\/tunnelingworld.com\/?p=11858"},"modified":"2023-06-18T05:36:11","modified_gmt":"2023-06-18T05:36:11","slug":"chinas-first-super-large-dual-mode-shield-tbm-launches-on-high-speed-rail-project","status":"publish","type":"post","link":"https:\/\/tunnelingworld.com\/?p=11858","title":{"rendered":"China\u2019s First \u2018Super-Large\u2019 Dual-Mode Shield TBM Launches on High-Speed Rail Project"},"content":{"rendered":"<p style=\"text-align: justify;\"><a href=\"http:\/\/www.crecg.com\/english\/\" target=\"_blank\" rel=\"noopener\">China Railway Group<\/a>, the Chinese contractor, has launched two \u2018super-large\u2019 diameter TBMs (tunnel boring machines) for high-speed rail tunnel&#8217; construction.<\/p>\n<p style=\"text-align: justify;\">The firm declared that the \u2018Yongan\u2019 tunnel boring machine was China\u2019s first super-large diameter dual-mode shield machine, with an excavation diameter of 14.29 meters, a total length of 117 meters and a weight of nearly 4,250 tones.<\/p>\n<p style=\"text-align: justify;\">The TBM is equipped with eight main beam panel cutter heads, while the cutters feature improved impact and wear resistance.<\/p>\n<p style=\"text-align: justify;\">The machines, together developed by China Railway Tunnel Group and China Railway Engineering Equipment Group, will bore a total of 3.96km for the Guifengshan Tunnel on the Jiangji section of the Zhuzhao high-speed railway.<\/p>\n<p style=\"text-align: justify;\">The railway line in Guangdong province will operate for a total length of 98.6km, with tails driving at a speed of 350 km\/h. The tunnel itself will be 15km long.<\/p>\n<p style=\"text-align: justify;\">While \u2018Yongan\u2019 was launched in Shunde, another dual-mode shield tunnel boring machine called \u2018Huatong Fenjin\u2019 was launched from Zhongshan.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>China Railway Group, the Chinese contractor, has launched two \u2018super-large\u2019 diameter TBMs (tunnel boring machines) for high-speed rail tunnel&#8217; construction. The firm declared that the \u2018Yongan\u2019 tunnel boring machine was China\u2019s first super-large diameter dual-mode shield machine, with an excavation diameter of 14.29 meters, a total length of 117 meters and a weight of nearly 4,250 tones. The TBM is equipped with eight main beam panel cutter heads, while the cutters feature improved impact and wear resistance. The machines, together developed by China Railway Tunnel Group and China Railway Engineering Equipment Group, will bore a total of 3.96km for the [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":11860,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,43],"tags":[],"class_list":["post-11858","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-project-show-case","post--single"],"_links":{"self":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/11858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11858"}],"version-history":[{"count":0,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/posts\/11858\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=\/wp\/v2\/media\/11860"}],"wp:attachment":[{"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tunnelingworld.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}