The Hong Kong International Airport, located in Chek Lap Kok, Lantau Island, New Territories, officially opened on July 6, 1998, with two runways. The planned third runway will be constructed via land reclamation to the north of Airport Island, covering approximately 650 hectares, equivalent to building a new airport. Upon full operation, the airport’s annual passenger capacity is expected to reach 120 million, with an annual cargo volume of 10 million tons. The C3204 section is a critical component of the construction system for the third runway. The foundation treatment utilizes the offshore deep cement mixing pile (DCM) method, with a designed single cluster pile cross-sectional area of 4.64 square meters and a maximum treatment depth of 35 meters. The project employs the first domestically designed and built dual-processor deep cement mixing ship.
Our company was responsible for the construction ship management and subcontracting for the DCM labor. A total of 4,340 deep cement mixing piles were completed within the scope of the project, contributing significantly to the structural integrity and success of the third runway construction.
The Hong Kong-Zhuhai-Macau Bridge is a landmark infrastructure project in China, serving as a major cross-sea connection between Hong Kong, Macau, and Zhuhai, Guangdong. Spanning a total length of 55 kilometers, the bridge includes 29.6 kilometers of main bridge and 41.6 kilometers from Hong Kong Port to the Zhuhai-Macau Port. The bridge deck features a two-way six-lane expressway with a design speed of 100 km/h, and the project had a total investment of 126.9 billion yuan.
Renowned globally for its massive construction scale and cutting-edge engineering, a core component of this project involved the Hong Kong Port, where an artificial island spanning 1.4968 million square meters was created through reclamation. The geological conditions at the site consist of 8-12 meters of blown sand, 10-20 meters of silt, and 2-4 meters of clay.
To reinforce the foundation, the project adopted deep cement mixing pile (DCM) technology, with piles designed to a depth of 22-36 meters. Our company executed the construction using domestically developed Φ 1300@1200 two-axis DCM technology, completing a pile volume of nearly 800,000 cubic meters with single-pile cross-sectional areas of 2.62 square meters.
The successful implementation of this project set a benchmark for using DCM technology in foundation reinforcement within Hong Kong. Automated monitoring and recording systems were employed to collect critical construction data, including drilling depth, time, cement slurry flow rates, and mixing quality, ensuring precise control and improved efficiency.
In this project, our company collaborated with G., a South Korean company with a 50-year history, and E Company, to develop advanced four-axis DCM drilling rigs suitable for both offshore and onshore construction. These rigs, capable of creating a single cluster of piles with a cross-sectional area of 4.62 square meters, have resulted in over 20 Chinese invention and utility model patents, revolutionizing DCM drilling technology and special construction equipment. This project showcases the integration of innovative technologies and international cooperation, making it a milestone in large-scale infrastructure engineering.
The Lok Ma Chau Hetao area is located at the junction of Hong Kong and Shenzhen, spanning approximately 87.7 hectares of land formed by the intersection of the new and old Shenzhen waterways near the Huanggang Lok Ma Chau Port. In 2017, the governments of Hong Kong and Shenzhen signed a memorandum of cooperation to jointly develop the Hong Kong-Shenzhen Innovation and Technology Park, establishing key scientific research cooperation bases within the park to drive long-term economic development for both cities.
This project is under the jurisdiction of the Civil Engineering and Development Department of Hong Kong (CEDD), with the main contractor being the China Railway Construction Corporation (CRCC) - Qunli - Baohua Joint Venture. The work involves the construction of large-diameter two-axis deep cement mixing piles (DCM) with a total contract quantity of 387,060 cubic meters.
Our company is responsible for the construction, which began in December 2021. However, in February 2022, the project was temporarily suspended due to the requisition of the site for the construction of a makeshift hospital. Construction resumed in November 2022 and is currently ongoing.
The Lok Ma Chau Loop area, situated at the junction of Hong Kong and Shenzhen, spans approximately 87.7 hectares of land formed by the old and new Shenzhen River channels near the Huanggang-Lok Ma Chau boundary. In 2017, the governments of Hong Kong and Shenzhen signed a memorandum of understanding to jointly develop the “Hong Kong-Shenzhen Innovation and Technology Park”, envisioned to become the largest innovation and technology platform in Hong Kong.
The project includes ground treatment and site formation works, the construction of carriageways, footpaths, cycle tracks, and a public transport interchange. It also encompasses Western Connection Road Phase 1, involving the widening of Ha Wan Tsuen East Road, and includes the construction of footpaths, cycle tracks, slopes, retaining walls, and a vehicular bridge over the old Shenzhen River meander. Other infrastructure developments include a tertiary sewage treatment plant, sewerage and drainage systems, and water supply systems, alongside environmental mitigation measures such as 18 hectares of offsite wetland compensation and 1.3 hectares of woodland compensation.
Under the supervision of CEDD of Hong Kong, with CRCC - Kwan Lee - Paul Y. JV as the main contractor, our company is responsible for executing 50,000 cubic meters of deep cement mixing for this transformative project, contributing to its success in meeting engineering and environmental standards.
