Seoul Metropolitan Government announced that it will start construction of the tunnel under the Han River today (Thursday) to build the section between Amsa-dong and Guri-si Topyeong-dong, Gangdong-gu, on the extension of subway line 8. The extension of subway line 8 (Byeolnae) starts from Amsa Station in Gangdong-gu, passes through Guri-si, Gyeonggi-do and extends 12.9km to Namnaeju-si Byeolnae-dong. Six stations will be constructed.

The part in Han River basin will have the tunnel depth 52m and the length of 1,279m. The Han River Basin Tunnel section is a very dangerous and difficult construction section with an atmospheric pressure of up to 4.7 times at a depth of 52m (bottom) from the surface. The pressure (earth pressure and water pressure) of the tunnel penetrating 1,279m of total length is expected to reach 4.7bar (Kg / cm²).

For the tunnel construction the Tunnel Boring Machine will be used for environmental and efficiency reasons. It is bored from Gupyeong Topyeong-dong to Amsa-dong, Gangdong-gu. It is scheduled to be completed in September 2023.

https://www.youthassembly.kr/news/50725
#Korea

The Smart Construction Technology and Safety Expo held at KINTEX, Ilsan showcases Korean Tunnel Boring Machine (TBM) and construction industry digitization technologies of BIM (3-D digital modeling), VR (Virtual Reality), AI (AI) and automation based process management.

http://www.conslove.co.kr/news/articleView.html?idxno=62656
#Korea #Construction #Technology

SK E&C is to be selected as a preferred negotiator for Silvertown Tunnel Project.

The company was selected as the preferred bidder for the Silvertown Tunnel project, which was ordered by Transport for London (TfL) in June. SK E&C has formed an investment consortium RiverLinx with four companies: Macquarie Capital (Australia), Sintra (Spain), Aberdeen Standard Investments (UK) and Bam (BAM PPP PGGM (Netherlands)). SK E & C has a 10% stake in Riverings.

This project is to construct two one-way two-lane road tunnels with a total length of 1.4km and a 12.4m diameter through the lower Thames to connect the Silvertown and Greenwich areas of London, England. Is about 1 billion pounds.

SK E&C is in charge of EPC (design, procurement and construction) by constructing a construction consortium with Ferrovial Agroman (Spain) and Bam Nuttall (UK). SK E&C holds a 20% stake.

http://paxnews.co.kr/m/view.php?idx=17727&mcode=

#Daewoo Engineering & Construction (Daewoo E&C) wins a US$86 million order for a construction work with an immersed #tunnel in #Iraq.

http://www.businesskorea.co.kr/news/articleView.html?idxno=37234

A Study on the Behaviour of Group Piles by TBM Tunnel Excavation.
Graduate School of Hanyang University
Jae Woong Kim
https://tunnelcontact.com/discussion/view/5709/a-study-on-the-behavior-of-group-piles-by-tbm-tunnel-excavation

Prediction of replacement period of shield Tunnel Boring Machine disc cutter using SVM

http://www.jkta.or.kr/articles/xml/DbAx/