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South Korea

South Korea, Seoul - kr/23

Electric Cable

2.75 km-long cable tunnel to be excavated in weathered rock with UCS to 100 MPa at depths of 40-45 m by Dong-A using 3.48 m-diameter Lovat TBM. Drive is from start shaft to underground reception chamber, with tight curves of 60 m and 100 m radius. Precast segmental lining 2.85m/3.35m diameter. TBM delivery early-2002. Visit www.lovat.com 34/01.



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South Korea, South Kyongsang - kr/22

Highway

Vinci-GTM with CKI and Daewoo to develop $1.7 billion connection between Pusan and Koje island to include 3.7 km-long tunnel and two 3.5 km-long bridges with approach roads under 40-year concession agreement, with $500 million provided by government. Six-year construction programme to start 2001. Visit www.groupe-vinci.com December 2000. Consortium of GTM, Cheung Hong, and Daewoo to commence $1.7 billion, 32 km-long link Pusan to Koje Island end-2001. Project includes 3.7 km-long road tunnel. Visit www.groupe-gtm.fr 17/01. The joint venture of Halcrow and Tunnel Engineering Consultants has been appointed technical advisor to Daewoo Construction, the contractor leading the consortium that will design, build, and operate the US$1.1 billion Busan-Geoje Fixed Link. To be completed in 2009, the link will provide an 8.2 km highway between the southern city of Busan and the island of Geoje. The project comprises a 3.4 km-long immersed tunnel located to a depth of 40 m. Visit www.halcrow.com and www.tec-tunnel.com 21/03.A team of Cowi and Daewoo Engineering Co. won a $24 million contract to design and supervise the construction of the $900 million bridge and tunnel link between Busan and Geoje island. The link includes a 3.4 km immersed tunnel, cut-and-cover portals and bored tunnel sections. Visit www.cowi.dk and www.dweng.co.kr 28/03.Mott MacDonald has been awarded a contract to assist Yooshin Engineering Corporation in supervising the construction of a USD1.6 billion fixed link from the Korean mainland near Busan to the Island of Geoje. The project will involve building two cable stayed bridges with main spans of 475 m and 230 m, and a 3.7 km-long immersed tube tunnel, with a total crossing length of 8.2 km. The rectangular dual two-lane undersea tunnel will be one of the longest and deepest in the world and will require extensive ground improvement. An existing small island will form the transition between the tunnel and the approach spans for the bridge section of the crossing. This project is due to be completed in December 2010. Visit www.mottmac.com and www.yooshin.co.kr/english/default.asp 35/05.



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South Korea, Kwangju - kr/21

Metro

  Five lines totalling 102 km to be built by 2021. Construction of the first 11.9 km section of Line 1 from Sotae to Maruk with 14 stations started in August, 1996 with 9.6 km of cut and cover and 2.3 km by TBM. Expect 43% completion by end-2000 with opening planned for June, 2002. Sept 2000.



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South Korea, Taejon - kr/20

Metro

Construction of 22.6 km-long metro linking Panamdong with Uesamdong started in 1996. First 12.3 km section from Panamdong to Taejon Government Complex with 11 stations is entirely underground, except for the eastern depot area. 26% will be complete by end-2000 with opening planned for 2002. Sept 2000.



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South Korea, Pusan - kr/19

Metro

Delayed $1.2 billion, 18 km-long line 3 now under construction will run from Taejo on west bank of the Nakdong river via Tokchon, Minam, and Yonsandong to Millak on Line 2. The 3 km western section is elevated, and the remainder underground. Sept 2000.



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South Korea, Seoul - kr/18

Airport Railway

Planned 66 km line, cost $2.9 billion, will connect Seoul with both Kimpo airport and the new Inchon International, due to open March, 2001, which is being built on reclaimed land between two islands west of Inchon city. First 12 km from Seoul station will be built under an existing railway. The Han river will be crossed by bridge and the line will then dive underground for about 10 km, passing beneath Kimpo airport, before coming to surface. The final 6 km will be underground and the new Inchon airport will be served by two underground stations. Sept 2000.



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South Korea, Seoul - kr/17

Water Supply

3.6 m-diameter TBM has progressed 2 km and is now reported as stuck. Work has proceeded using drill/blast with a railbound Haggloader 8HR2 feeding two Shuttletrains type HRST 115-CE. Visit www.rockmachines.se August 2000.



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South Korea, Pusan - kr/16

Highway

Finance of 146.7 billion Won for proposed 2.33 km-long twin tunnels in downtown Pusan raised by Ssangyong, Cho Hung Bank, Hanvit Bank, Pusan Bank and Kyobo Life Insurance together with Pusan City contribution. August 2000.



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South Korea, South - kr/15

Cable Tunnel

Hankuk S.E.C. Co. Ltd., a division of Dong-A Geological Engineering Co. Ltd., has purchased a new Lovat 3.07 m diameter EPB/slurry TBM to excavate a cable tunnel in southern Korea at depth 14 m in granite rock formation with RQD values of 60-70 % and UCS of 120-150 MPa. The TBM is equipped with a bi-directional, multiple speed mixed face cuttinghead, with independently fed and operated face injection ports and disc cutters interchangeable with Lovat ripper teeth. The main bearing sealing system is designed for a maximum earth and water pressure of 4 bar under continuous operation in both EPB and slurry modes. Eight hydraulic motors power the cuttinghead, accompanied by one 300kW electric motor coupled to a variable displacement pump. Ten propulsion cylinders provide 850 t of constant thrust and variable extension and retraction speeds to propel the 93 t x 32 m-long TBM and backup. Visit www.lovat.com July 2000.



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South Korea, Doghe - kr/14

National Railway

  KNR has awarded a $290 million design/build contract for the 17.8 km-long Young Dong Railroad Relocation project to a consortium led by Daewoo Corporation. Project includes 16.3 km of new, mixed-traffic, single-track rock tunnel to be driven by drill/blast on a large-radius loop to provide the required gradients between Dong-Baek Mountain station and Do-Ge station in the eastern mountains. Construction period of eight years. Design by Yooshin Engineering Corporation with specialist consultancy services provided by Halcrow/HBI Haerter includes a rescue station at a crossing loop complete with emergency ventilation through a deep shaft. More information from Dr Rudolf Bopp at hbi.bern@bluewing.ch January 2000. Longest rail tunnel in Korea 16.5 km to be ventilated using Shinhan axial flow fans and ducting. Visit www.shinhan-tunnel.com 20/01.Construction of Youngdong Line from Dongbaek to Doghe underway for completion 2007, value $240 million. 16.24 km-long Doghe NATM tunnel at Samcheok City awarded to contracting consortium of Daewoo 40%, Hyundai 30%, SK 20%, others 10%. Visit www.hyundai.com 24/01.



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