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Thailand

Thailand, Bangkok - th/15

Drainage

The Bangkok Metropolitan Administration has awarded a 2.1 billion baht contract to IN consortium, comprising Italian-Thai Development Plc and Nishimatsu Construction, to drill a 5.3 km drainage tunnel between Lat Phrao canal and Phra Khanong. Work would start early next year at Lat Phrao canal, near the Rama IX pond. The tunnel would go to Saen Saeb canal, Sukhumvit 71 road and the Phra Khanong canal before ending at the Phra Khanong water pumping station. The work is due for completion in 2006. Visit www.italian-thai.co.th and www.nishimatsu.co.jp/eng 32/03.

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Bangkok Metropolitan Administration to call tenders early-2011 for 6 km-long, 5 m-diameter Ratchadaphisek-Suthisarn tunnel to drain floodwater from Huai Kwang, Din Daeng, Chatuchak, Phrayathai, Dusit and Bang Sue areas, estimated value EUR317 million. Visit www.bangkok.go.th/en/index.php. 52/10.

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Thailand, Viphavadi - th/14

Cable Tunnel

  7.2 km-long Rangsit Road project mobilising with shafts under construction at 600-700 m intervals by Italian Thai Skanska jv. Two Herrenknecht 3.2 m-diameter EPBs for delivery end-December will install 2.6 m i.d. pipes commencing early-2000. Some drives will be around curves. December 1999.

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Thailand, Samutprakarn - th/13

Trunk Sewer

  Planned system 128 km long of which 35 km presently under construction using up to five Soltau 3.5 m-diameter EPB machines fitted with screw augers. Progress limited by availability of jacking shafts, but 16-23 m/day reported for first 4 km of completed 3.0 m internal diameter pipe. More information from paulsoltau@aol.com . October 1999.  Alignment of tunnel parallels the coast at 20 m depth along Sukhumvit Road. Some 65 jacking and reception shafts being installed and a further 40 required for sewer connections. Time for standard 600 m drive between shafts in marine clay horizon is 14 days and time to sink and prepare a shaft for launch is six weeks. Twelve drives completed, with three out of the five Soltau machines in the ground at any one time. Contractor VSK Pipejacking jv will commence another 10 km of small diameter connectors early-2000. December 1999.

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Thailand, Bangkok - th/12

Metro Blue Line

Bangkok Transit System received first $87 million to commence construction of 23.7 km Green Line. North and south sections of Blue Line scheduled for completion 2003. NATM consultant: Geoconsult E-mail office@gcs.co.at contact F L Jansky. Nov 1998.   $650 million 10 km-long twin-tube 5.7 m-diameter south section with nine stations under construction by jv of Bilfinger & Berger, Ch Karnchang, Kumagai Gumi and Tokyu Construction and will use two Herrenknecht EPBs ex-Taipei and two new Kawasaki machines. The Herrenknechts will start in July 1999 from Queen Sirikit station and will bore 4.8 km to Hua Lamphong station by mid-2001. The Kawasaki machines will start from the Rama IX station and drive 3.4 km to Queen Sirikit. Precast segmental concrete lining comprising 1.2 m-wide rings of five segments and key with hydrophilic gaskets. Rates of 15 m/machine/24h day are expected in the homogeneous, low-abrasive, boulderless clay. Principal design engineer Maunsell Asia. $770 million 10 km-long north section of similar dimensions with another nine stations under construction by ION jv comprising Italian-Thai, Obayashi and Nishimatsu using four dual-mode open/EPB machines from Kawasaki. Two machines launched from Ratchada station box early-1999 and two from Thiam Ruam Mit station box in April, 1999. Diaphragm walling and core excavation of station boxes is well underway along the route and will be completed ahead of each TBM arrival. Main consultant Ove Arup, sub-consultant for tunnels Geoconsult. Handover scheduled for 2002. June 1999.   First TBMs commissioned for 11 km Bangsue-Lat Phrao-Depot northern section of planned 20.5 km MRTA Blue Line by ION joint venture under $1 billion contract. 9 km of 6 m-diameter twin-bore tunnels and 9 stations designed by Arup Transport. ION comprises Italian Thai, Obayashi and Nishimatsu. Planned southern section of line will extend via Bon Kai to Hua Lum Pong station. August 1999.   Bilfinger & Berger reports completion of 190,000 sq m of diaphragm walls up to 1.2 m-thick for the stations using special equipment in restricted working heights. Foundation levels of stations up to 46 m below ground, with centre columns resting on 1.8 m-diameter piles, 70 m-deep. Dewatering avoided because of fears of settlement. Jet grouting employed to strengthen ground around TBM launch and reception positions and at pump sumps and adits between main tunnels and intervention shafts. Visit www.bilfingerberger.de for further information. October 1999.   SNC-Lavalin awarded three-year, $150 million lump-sum contract in joint venture with Ch Karnchang of Bangkok for the engineering, procurement, construction and commissioning of trackwork and power systems for the whole 20 km-long metro system. More details at www.snc-lavalin.com November 1999.Total length of eight twin tunnels connecting stations is almost 15 km. Four 6.3 m-diameter EPBs have been used: two launched from Phra Ram 9 station in May/June, 1999; and two from Queen Sirikit National Convention Center station in Sept/Oct, 1999. By April, 2000 nine of the sixteen drives were completed with a peak advance of 35 m/day, erecting 1.2 m-wide, 30 cm-thick, 5 + 1 concrete segment rings. Visit www.bilfingerberger.de and www.herrenknecht.com August 2000.   BMCL Co, a subsidiary of Ch Karnchang, together with Mitsubishi Electric and Alstom, to raise funds for provision of services under its 25-year MRTA contract for the 20 km-long subway being built from Hua Lamphong to Bang Sue, opening end-2002. Visit www.alstom.com 15/01.   CKSL consortium, comprising Ch Karnchang and SNC Lavalin, has completed laying 1 km of track from Rama IX maintenance centre to Thiem Ruam Mitr station. The 60 km tracklaying contract from Bang Sue to Hua Lamphong is progressing at 50 m/day for completion May, 2002. Visit www.snc-lavalin.com 40/01.   MRTA planning 13.8 km-long extension of metro from Hua Lamphong to Bang Khae, beneath Ratanakosin Island. Soft loan sought from JBIC, with 0.75% interest, 10 year grace period, and repayments over 40 years. Economic internal rate of return for extension is 14%. 44/01.  Phase I of a 8.7 km blue Line extension from Hua Lamphong to Bang Wa is awaiting approval by the Committee for the Management of Land Traffic (CMLT). The project includes 4.9 km of tunnels and four underground stations. The MRTA has completed the preliminary design. Project to be implemented under design/build contract. A single tunnel will be located in east Bangkok while a twin tunnel will be built in the west side in Thonburi. The line will cross underground the Chao Phraya river at Pak Khlong Talart. Visit www.mrta.or.th 04/02.

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Thailand, Bangkok - th/11

BMA 3 Wastewater

Nawarat Patanakarn PateLan jv undertaking 60-70 km of work in the internal diameter range 2.3 m to 300 mm. Two Lovat 2.8 m-diameter telescopic EPB machines are designed for continuous operation, so mining carries on while 2.5 m o.d./2.3 m i.d. pipes are added to string. Average 350 m run between shafts. Arsenal of 12 assorted microtunnelling machines for small diameter connections. December 1999.

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