Stormwater Management and Road Tunnel (SMART)
Malaysia (2003 - 2007)
One of our most distinctive and challenging engineering projects we undertook was the Stormwater Management and Road Tunnel (SMART) project – conceived after a series of devastating flash floods washed the heart of Kuala Lumpur city centre and accumulated losses rose to billions of ringgit.
Conceived with an innovative and never-before-attempted concept to tackle the crippling floods and snarling traffic jams that plaque the Southern Gateway of Kuala Lumpur, SMART captured the attention of the international engineering community with its ingenuity and functional capability.
Employing two Slurry Mix-Shield Tunnel Boring Machines (TBMs) measuring 13.26m in outer diameter, the largest in Sought-East Asia then, we tunnelled under live traffic that began from the old Public Works Department football fields at Jalan Chan Sow Lin, at the central of the alignment, and moved outwards towards their respective ends.
Altogether, the TBMs – named Tuah and Gemilang (literally “Luck” and “Splendid” in English terms) – traversed a combined distance of 9.7km beneath federal-owned owned roads and the city centre’s highly unstable tropical karstic limestone and alluvium geology that included loose silt sand, peats, cliffs, pinnacles, cavities, collapsed cavities and sinkholes.
In the process, our engineering team achieved a world record and record-breaking time of building 66 rings in a week and 13 rings in 24 hours of operation for a large-diameter TBM.
The 9.7km stormwater tunnel in SMART helps divert excess floodwater from Sungai Klang and Sungai Ampang saving the Financial District of Kuala Lumpur, in the surrounding area of Masjid Jamek, from future floods. The 3km motorway tunnel incorporated into SMART acts as an efficient alternative route from the Southern Gateway of KL-Seremban Highway, Federal Highway, Besraya and East-West Link from entering and exiting the city centre.
This iconic project assembled the best of Malaysian engineering expertise and won the Group international accolades from the most prestigious builders’ award, the British Construction Industry Award (BCIA) for Best International Project.
Locally, SMART won double honours from the Construction Industry Development Board of Malaysia for Excellence in Innovation and Environmental Protection, and a year later as the top builder in the country.
Three-mode operation: The SMART system works on a three-mode principle based on the level of flood discharge.
In the event of a moderate storm, the SMART system will be activated and excess rainwater will be diverted through the stormwater bypass tunnel, in the lower channel of the motorway tunnel. The motorway tunnel is open to motorists
During severe storm or heavy inundation, the monitoring stations will issue an alert of the need to close the motorway tunnel from motorists. Sufficient time will be allocated to allow the last vehicle to exit the motorway safely before the automated water-tight gates are opened to allow floodwater to pass through to the storage pond and subsequently to Sungai Kerayong. The motorway tunnel will be re-opened to traffic within 48 hours after closure
|Client||Government of Malaysia|
|Concessionaire||Syarikat Mengurus Air Banjir & Terowong Sdn Bhd|
|Turnkey Contractor||MMC–Gamuda Joint Venture|
|Scope of Works||
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