{"id":27991,"date":"2023-11-17T15:58:51","date_gmt":"2023-11-17T14:58:51","guid":{"rendered":"https:\/\/www.soletanche-bachy.com\/?p=27991"},"modified":"2024-06-04T16:51:40","modified_gmt":"2024-06-04T14:51:40","slug":"uk-ground-engineering-complete-for-silvertown-tunnel","status":"publish","type":"post","link":"https:\/\/www.soletanche-bachy.com\/en\/uk-ground-engineering-complete-for-silvertown-tunnel\/","title":{"rendered":"UK: Ground engineering complete for Silvertown Tunnel"},"content":{"rendered":"
17\/11\/2023<\/p>\n<\/div>
Bachy Soletanche recently concluded its \u00a325m+ piling programme for Transport for London\u2019s (TfL) new Silvertown Tunnel.<\/strong><\/p>\n<\/div> Due for completion in 2025, the Silvertown Tunnel will be a 1.4km twin-bore road tunnel running under the River Thames, connecting Silvertown to the Greenwich Peninsula. The additional route is set to ease chronic congestion at the Blackwall Tunnel and enable more cross-river bus journeys.<\/p>\n Working on behalf of the Riverlinx CJV (a joint venture comprising Ferrovial Construction, BAM Nuttall and SK ecoplant), Bachy Soletanche delivered the geotechnical works for the Greenwich side of the River Thames, which took just under two years to complete. <\/p>\n For the tunnel\u2019s South Portal, Bachy Soletanche installed rotary bored piles to form a secant wall, soldier piles and jet grouted columns. The company installed further secant piles for the Open Cut and Overbridge. <\/p>\n Another major section of the contract involved the construction of a diaphragm wall shaft to form the Greenwich Rotation Chamber, which enabled the reception and rotation of the TBM (tunnel boring machine) after it completed its southbound drive of the tunnel. To facilitate the safe manoeuvring of the TBM, Bachy Soletanche installed unreinforced CFA piles<\/a> outside the shaft to strengthen and reduce the permeability of the river terrace deposits.<\/p>\n<\/div>