{"id":216781,"date":"2026-04-12T19:58:42","date_gmt":"2026-04-12T19:58:42","guid":{"rendered":"https:\/\/teknomers.com\/en\/china-is-constructing-a-deep-sea-tunnel-for-its-high-speed-rail-achieving-a-record-depth\/"},"modified":"2026-04-12T19:58:44","modified_gmt":"2026-04-12T19:58:44","slug":"china-is-constructing-a-deep-sea-tunnel-for-its-high-speed-rail-achieving-a-record-depth","status":"publish","type":"post","link":"https:\/\/teknomers.com\/en\/china-is-constructing-a-deep-sea-tunnel-for-its-high-speed-rail-achieving-a-record-depth\/","title":{"rendered":"China is Constructing a Deep-Sea Tunnel for Its High-Speed Rail, Achieving a Record Depth"},"content":{"rendered":"\n
\n

The Depths of Innovation: China\u2019s High-Speed Undersea Tunnel Project<\/h2>\n

Deep beneath the surface of the Pearl River estuary, China is making significant strides in constructing an undersea tunnel as part of its high-speed railway infrastructure. Recently, the excavation has reached an impressive depth of 113 meters, a significant achievement that heightens the challenges posed by geological conditions and water pressure.<\/p>\n

Transforming Transportation: The Shenzhen-Jiangmen High-Speed Line<\/h2>\n

This underwater tunnel is an essential component of the broader 116-kilometer Shenzhen-Jiangmen high-speed railway line, which aims to connect the two cities in under an hour. This project is strategically designed to integrate with China\u2019s coastal rail corridor, enhancing connectivity and efficiency for commuters in Southern China.<\/p>\n

The Technical Challenge of the Undersea Section<\/h3>\n

The construction phase focuses intensely on the intricate underwater infrastructure, which demands precision and engineering excellence. Central to this operation is the Shenjiang-1<\/strong>, a large-diameter tunnel boring machine (TBM) specifically developed for this endeavor. The machine has maintained a continuous excavation pace, even during holidays, proving its reliability and advanced engineering.<\/p>\n

The Shenjiang-1 faces unique hurdles: it must navigate through 13 different geological strata, consisting of five types of composite geology and six fault zones, making every step of the operation a calculated decision based on real-time data.<\/p>\n

Overcoming Natural Obstacles<\/h3>\n

Aside from the mechanical challenges posed by the TBM, the excavation process is significantly affected by the terrain. Each geological layer may react differently, prompting constant adjustments and decision-making to ensure the integrity of the tunnel structure.<\/p>\n

Moreover, the project operates under high water pressure at depths of up to 116 meters below the seabed<\/strong>. To manage these hydraulic conditions, a specialized sludge circuit is employed. This dual-purpose system reduces friction at the digging face and transports the excavated materials to the surface for separation and reuse.<\/p>\n

Innovative Construction Techniques<\/h2>\n

As the Shenjiang-1 continues its excavation, construction teams are actively assembling prefabricated concrete segments to form the tunnel\u2019s interior lining. Each segment is approximately two meters wide, with nine segments needed to complete a single ring in a tunnel that spans over 13 meters in diameter. This innovative approach ensures that both excavation and construction proceed simultaneously, speeding up the project timeline while maintaining structural integrity.<\/p>\n

Regional Impact and Economic Integration<\/h2>\n

This monumental infrastructure spans 13.69 kilometers and crosses various waterways at the river’s mouth between Dongguan and Guangzhou<\/strong>. Serving as a critical segment in the Guangdong-Hong Kong-Macao Greater Bay Area rail network, this project not only enhances regional connectivity but also supports economic integration in one of China\u2019s most dynamic regions.<\/p>\n

As the construction of this deep-sea tunnel progresses, it represents not only an engineering marvel but also a vital step towards fostering improved connectivity and economic cooperation in Southern China.<\/p>\n<\/div>\n


\n
General News – 2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The Depths of Innovation: China\u2019s High-Speed Undersea Tunnel Project Deep beneath the surface of the Pearl River estuary, China is making significant strides in constructing an undersea tunnel as part of its high-speed railway infrastructure. Recently, the excavation has reached an impressive depth of 113 meters, a significant achievement that heightens the challenges posed by […]<\/p>\n","protected":false},"author":1,"featured_media":216782,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36399],"tags":[24063,2397,37946,45898,13490,13729,4583,169,1072],"class_list":["post-216781","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology","tag-achieving","tag-china","tag-constructing","tag-deepsea","tag-depth","tag-highspeed","tag-rail","tag-record","tag-tunnel"],"_links":{"self":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts\/216781","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/comments?post=216781"}],"version-history":[{"count":1,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts\/216781\/revisions"}],"predecessor-version":[{"id":216783,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts\/216781\/revisions\/216783"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/media\/216782"}],"wp:attachment":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/media?parent=216781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/categories?post=216781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/tags?post=216781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}