Being the seventh land crossing facilities between Hong Kong and Shenzhen, the Liantang/Heung Yuen Wai Boundary Control Point (LT/HYW BCP) encompasses not only border crossing facilities, but also the trunk road linking North-East New Territories to Liang Tang on Shenzhen’s East side. By providing another crossing option, this BCP will relieve congestion in the existing border crossings and significantly reduce traveling time between points. Furthermore, it will facilitate the extension of the economic hinterland between Hong Kong and Shenzhen, strengthening the linkage between Hong Kong and Guangdong East via Shenzhen, and to play a strategic role in the regional integration and co-operation effort.
AECOM was appointed by Civil Engineering and Development Department (CEDD) of HKSAR Government in 2011 to provide Detailed Design, Contract Administration and Construction Supervision services for this iconic project. The project scope comprises forming 23 hectares of land for the BCP and constructing the 11km long trunk road where 5.7km are road tunnels and 4.3km viaducts to enable commissioning of the BCP by 2018. Upon completion, the trunk road will provide a direct traffic link to the BCP from Fanling Highway improving connectivity in the North-East New Territories through connections to the local road networks.
Making a new record, the 4.8km long Lung Shan Tunnel as part of the project will be the longest road tunnel in Hong Kong at the time of its completion. To ensure adequate ventilation in this long and enclosed environment, AECOM has commissioned to conduct an engineering review on the tunnel ventilation system design, whereby our preliminary design determined a tenable egress path during emergency conditions with CFD analysis. We also assessed the air quality including CO, NOx, and visibility based on the standards of HKEPD and PIARC for projected traffic volumes.
Another first time in Hong Kong, this project used a single Earth Pressure Balanced (EPB) Tunnel Boring Machine (TBM) when constructing both northbound tube and southbound tube of the northern section of Lung Shan Tunnel, while the southern section of the tunnel was constructed simultaneously by conventional drill-and-blast method. The 14m-diameter TBM making a U-turn inside a huge cavern built at the junction of the northbound tube and the southbound tube was indeed a magnificent operations itself. The EPB TBM is the largest in Hong Kong at its time; it proves to be a cost-effective and time-efficient way to build tunnels under mixed ground conditions, and it also helps to secure the construction program and minimize disruptions to the environment.
Awards:
- Green Management Award (Corporation) – Project Management – Bronze Award, awarded by Green Council in 2014
- Safety Project Team Award – Gold Award, awarded by the Lighthouse Club in 2015
- CEDD Construction Site Safety Award 2016 – Gold Award
- Annual Award, by The Association of Consulting Engineers of Hong Kong in 2017
- Provisional Platinum rating under BEAM Plus New Buildings V1.2A, by Hong Kong Green Building Council in 2017