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Korea Ulsan Stockpile Underground Construction-Tunnel Excavation Work
This project is for National emergency preparedness project to strategically store crude petroleum. Stockpile underground facility is permanent, economically feasible, stable under emergency and better for environmental preservation. This project requires high technical skill & experience for underground excavation, organized management & operation system and understanding of highly stressed phenomenon of large section cave and water curtain system.
Hong Kong HKIA 3RS PJ DCM
It is a reclamation project to expand the 3rd runway of Hong Kong International Airport. Construction was carried out using the DCM method for the construction of the shoreline foundation, runway foundation, and landfill area. It aims to be completed in 2023, and when completed, it will be expanded to the size of Incheon International Airport to secure twice the number of takeoffs and landings compared to the current one. It is the first marine DCM to be constructed in Hong Kong and is Asia's largest in size.
HongKong 3RS 3206-Contract For Land DCM Works
Reclamation work to expand the third runway of Hong Kong International Airport located in LANTAU. The first ground improvement was completed through the marine DCM method, and the second ground improvement was carried out by applying the land DCM method at the same time as sand reclamation. In particular, the airport's altitude restricted area during the relevant construction section is applied with our new lot technology The ground has been improved.
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NEWS
CR106 Bored Tunneling Completion Ceremony Held in Singapore
On March 30, 2026, the Bored Tunneling Completion Ceremony for the CR106 project was held in Singapore, hosted by WOH HUP-DONGAH JV, with the client (LTA) and project stakeholders in attendance to celebrate the completion of tunneling works.
The project successfully demonstrated stable construction capability by operating two TBMs simultaneously to safely excavate beneath existing residential areas (HDB) and ongoing structures under constrained site conditions.
2026-03-30
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NEWS
Participation in the 42nd Korean Geotechnical Society Spring Conference
From March 26 to 27, 2026, the “42nd Annual General Meeting and Spring Conference of the Korean Geotechnical Society” was held at the Korea Science and Technology Center in Seoul, and the company participated in the event.
The company presented the cement supply technology for the offshore DCM method jointly developed with Sampyo Cement, demonstrating its technical capabilities.
2026-03-26
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NEWS
Received Plaque of Appreciation for Completion of Singapore T301 4-IN-ONE DEPOT Project
On March 13, 2026 (Fri), at the completion ceremony of the Singapore T301 4-IN-ONE DEPOT project hosted by GS E&C, the company received a plaque of appreciation from the client (LTA) and the main contractor in recognition of its contributions to the project.
This award reflects the dedication and efforts of all site personnel, and the company will continue to actively participate in future projects and strive for sustained achievements.
2026-03-13
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NEWS
2026 Order Target Achievement & Safety Prayer Ceremony
On February 28, 2026 (Sat), the “2026 Order Target Achievement and Safety Prayer Ceremony” was held at Yunsan in Bugok-dong, Busan. Employees, including domestic site managers, attended and shared a meaningful time pledging safety for the year and the achievement of order targets through the ceremony, a meal, and a hike.
2026-02-28
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NEWS
Completion of In-house Model TBM No.5
On February 11, 2026, the company completed the production of TBM No.5.
The equipment was manufactured starting in early September 2025 and completed following final pre-delivery inspection.
It was transported to the Siheung and Incheon power tunnel project sites starting February 23, where equipment setup was carried out.
2026-02-11
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NEWS
Received SHE Excellence Award at Singapore Changi Airport T5 Site
On February 6, 2026, at the ceremony hosted by CCCC·OBAYASHI·CAG and Changi Airport Group to commemorate 5 million accident-free man-hours, the company received the “SHE (Safety, Health & Environment) Excellence Award.”
2026-02-06
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