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Atkins and Dragages celebrate the first TBM tunnel breakthrough at Liantang project

The breakthrough ceremony for the Lung Shan Tunnel southbound tunnel boring machine (TBM) section of the Liantang/Heung Yuen Wai Boundary Control Point (BCP) took place on 1 March 2017. The ceremony was officiated by the Permanent Secretary for Development (Works), Mr Hon Chi-keung. Atkins was invited to celebrate the major milestone with Dragages, and other stakeholders.

Atkins was awarded the contract in 2013 to be the detailed design consultant for Dragages. Part of the scope includes the 4.8 km dual two-lane road tunnels - the longest land road tunnel in Hong Kong - which will connect millions of passengers and cargo travelling between Hong Kong and mainland China. The project also involves the largest EPB (earth pressure balance) TBM in Hong Kong with a 14.1m diameter, to tackle the challenges of excavating the geological area with multiple faults and mixed ground conditions.

Moreover, the tunnel boring machine is equipped with state-of-the-art systems designed by the contractor for real-time cutter disc wear measurement and automatic replacement of worn cutter discs in a timely manner, reducing the need for manual inspections and repairs, thereby enhancing the safety and efficiency of works substantially.

The tunnel boring works for the southbound tube commenced in November 2015 and lasted 16 months. Work is on schedule for completion in 2018.

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