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Latest Asia Update
Chennai challenge Can India’s coastal city get its subway on track to deal with ageing infrastructure and a rapidly expanding population Robbins technical writer Desiree Willis investigates.
Tale of two tunnels Engineers from Ayesa take a look at the detailed design for construction of NATM tunnels on the Ovulavaripalle to Venkatachalam railway line in Andhra Pradesh, India.
Tread softly In the wake of devastating floods in northern India last June, environmentalists have accused hydropower infrasturcture of causing a man-made disaster. Mahendra Bisaria, of Gammon Infrastructure, defends the use of hydropower by exploring the region’s geology and the development process for such projects.
India Inventory Danny Richards, senior economist for the data and market analysis arm of Tunnels’ publisher, Timetric, presents this report forecasting the economic performance of India’s infrastructure construction industry forward to 2017, extrapolated from a focus period 2008-2012.
Robust ground improvement Innovations on Singapore’s Marina Coastal Expressway have enabled faster, more cost-effective construction while meeting the state’s famously tough safety requirements. Andrew Mylius, technical writer for Mott MacDonald, released this report
Fifty shades of brown Slurry handling on Singapore’s Downtown Line Two contract 916 has been cited as an example of ‘slurry done right’. This paper by Gwyn Jones, deputy construction manager and tunnel manager for McConnell Dowell discusses the principles of managing slurry during tunnelling operation with particular reference to tunnelling in mixed face
Opportunity rocks Hong Kong develops into the main base of operations for the Asia Pacific, while Singapore strives to become to hottest destination for professionals, and both scrap for skilled labour. Alex Conacher speaks to three expats
High pressure sea crossing A slurry TBM is cutting through the sands deep under Zhanjiang Bay, China, to provide a crucial water link to and island steelworks. A tight schedule and a 42m head of water are upping the pressure on the project. Tunnels editor Jon Young visits the site
Traditional shields Japan-based Hitachi Zosen has been manufacturing TBMs since 1967. Yasuharu Hanaoka of the manufacturer’s industrial machinery business unit notes the decline in the open, semi mechanized shields that the company did brisk business within previous decades, as closed EPBMs and slurry machines have come to prominence. He explores the technology, and gives a recent example of a ‘traditional method’ shield in operation
Two worlds of tunnelling The Middle East stays strong on tunnelling for its new dream cities, while a belt of hydropower projects buoys the African market. Alex Conacher reports