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Japan, Hakkoda - jp/14

High Speed Rail

Drill/blast 4.3 km-long, 70 sq m vaulted cross-section twin-track Shinkansen tunnel in north of Honshu island will use semi-mobile crusher and conveyor system. Rock will be transported to the crusher in 5 cu m containers which will be used for stocking to relieve face. Scheduled start May, 2000. Information from dbtminpro@t-online.de December 1999.


Japan, Tokyo - jp/13


Teito Rapid Transit Authority has proposed a new 8.8 km line to link Shibuya and Ikebukuro via Shinjuku, work to commence 1999 for commissioning 2007. March 1999.


Japan, Hanshin Expressway - jp/12


Twin tunnels at Arimakita (1,810 m/1,845 m x 11 m wide) to be built in Cretaceous hard strata and Miocene soft strata by jv of Hazama/Maeda and Nishimatsu/Shimuzu at cost of Y10.6 billion commencing March, 1999 and scheduled for commissioning 2003. February 1999.  Twin tunnels at Kitasumakouku (380 m/550 m x 11 m wide) to be constructed in tuffs, conglomerates, sandstones and mudstones by jv of Konoike/JDC and Tobishima/Tokyu costing Y10.2 billion commencing June/December, 1999 for commissioning 2003. February 1999.


Japan, Kyushu - jp/11

High Speed Rail Kagoshima-Kumamoto

Alignment requires 13 tunnels, all 75m2 cross-section. 3,394 m-long Daini-Shibisan is under construction by Kajima/Konoika using 4 m Swellex bolts in heavily waterbearing and fractured sandstones, shales and clays. Shioyama at 10 km will be the longest land railway tunnel in Japan. 5,242 m Tagami tunnel under construction by Taisei Corporation in jv with Toc and Chizaki will be second longest and is first recorded use of a Nordberg Lokotrack as a mobile face crusher in a tunnel. March 1999.



Jordan, Al Wehda Dam - jo/12

Irrigation and Water Supply

The Jordan Valley Authority has awarded to Turkish contractor í–zaltin the construction of the $86 million Al Wehda dam in the northern Jordanian region of Maqaren on the Yarmuk River, which flows from Syria into Jordan. Associated works include a 2 x 600 m tunnel, 3.5 m in diameter, to be driven in limestone. The final lining will consist of a 40 cm-thick layer. Construction to begin in June and last 30 months. Jordan will finance the project thanks to loans from the Abu Dhabi Development Fund and the Arab Fund for Economic and Social Development. Visit www.ozaltin.com.tr 16/03.


Jordan, El Shidiya - jo/11


Contract award to consortium of Raytheon and Wisconsin Central to run freight railway line on behalf of government. Agreement involves construction of two extensions in order to connect the fertiliser factory near one end of the Aquaba line with the El Shidiya phosphate mine. Two tunnels with a total length of 1 km will be needed. Systra is conducting feasibility study in association with local consultants. November 1999.



Kazakhstan, Almaty - kz/11


  SNC-Lavalin of Canada in association with Guris of Turkey supported by the Canadian International Development Agency delineating capital city metro project, preparing preliminary designs, and establishing cost and financing strategies. May 1996.  Construction to resume after six-year delay due to lack of funds. Some 7 km of tunnels bored in the late-1980s will be part of design study which is funded in part by Canadian IDA. September 1997.



Kenya, Nyanza Province - ke/11


Breakthrough reported on the 6.3 km tunnel, 4.2 m in diameter, part of Phase 1 of the Sondu-Miriu Hydroelectricity Generation Project. Construction started in March, 1999 by a jv of Konoike, Veidekke, and Murray & Roberts for completion in March, 2003. Design and supervision by Nippon Koei Co. Ltd. Phase 2 planned to resume in January, 2002 after funding agreement was signed with the Japanese Bank for International Cooperation. Visit www.kengen.co.ke/sondu 51/01.



Kuwait, Kuwait City - kw/11


  Greenline (Lebanon) and Kuwaiti Brueckner Construction using numerous Herrenknecht AVN machines from 500 mm to 1,200 mm to drive up to 1 km/month on different projects. Contact through www.herrenknecht.com April 2000.



Kyrgyzstan, Taldyk Pass - kg/11


A 2,000 m tunnel alternative under the Taldyk Pass at an altitude of 3,000 metres is under study by Finnroad as part of the improvement of the Silk Road between Osh and Erkesh Tam. The tunnel will not be feasible before the volume of traffic is sufficient. It would be a single tube, 11 m-wide including pedestrian sideways. Expected geology is limestone. Drill/blast method. Support with rockbolts, shotcrete and steel arches, if needed. The timing of the project depends on political decisions yet to be made by China, Uzbekistan and Kyrgyzstan. Excavation is roughly estimated at $20 million. Financing by loans from Chinese international financial institutions. The client will be the Kyrgyz ministry of transport and communications. Visit www.finnroad.fi 07/02.