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South Korea

South Korea, Seoul - kr/26

Highway

Samsung Engineering and Construction is leading a group of six other South Korean contractors that submitted proposals to the Seoul metropolitan city government at the end of June for the KRW570 billion construction of a tunnel under the Han river. The 5.8 km link would connect the southern and northern sections of Seoul. Samsung's partners comprise Hyundai Engineering and Construction, Lotte, Ssangyong, Samwhan, Namyang and Daebo. Seoul city government will finish its own feasibility study into the plan by the end of this year. If the scheme is approved, construction would begin in early 2010 with completion by the end of 2014. Under current proposals the city government would award the Samsung consortium a 30-year BOT concession to build the scheme which would run from the COEX building in Samseong-dong, southern Seoul, to near the Seongsu bridge in the north. Visit www.secc.co.kr/e_secc/index.asp 36/07.

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South Korea, Tinangun, Junbuk Province - kr/25

Motorway

Tunnelling contractor Hyodong Development Co. has nearly completed excavation on two twin-bore tunnels on Section 6 of the Iksan-Pohang expressway. The 550 m-long Duckchon tunnel has already been holed through on both drives and concreting is under way. During the first week of February, the last five metres of the first bore of the 650 m-long Shinjung tunnel was being completed with one-metre rounds in weathered rock, whilst the second had 30 m to go. Hyodung is using drill-and-blast with a Tamrock Axera 3-boom T11S-315 jumbo, supplied by Sandvik Suh Jun, with mucking out by a Caterpillar 966F wheel loader into 16 t highway dump trucks. Sprayed concrete is the primary support in massive limestone using a Normet Spraymec 9150WP rig, also supplied by Sandvik Suh Jun. The two tunnels will be linked by the Shinjung Bridge across a central valley. The main contractor is Ultra Construction Co. for the Client, Korea Highway Corporation. Visit www.smc.sandvik.com, www.cat.com, www.normet.fi and www.hdconst.com 08/04.

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South Korea, Seoul-Woegwak - kr/24

Highway

Proposed tunnel by the Korea Highway Corporation through the Mount Bukhan National Park that would connect the Ilsan-Toegyewon section of the Seoul-Woegwak Expressway. Strong opposition from environmentalists who took KHC to court to stop the project. Visit www.freeway.co.kr 06/02.

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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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