Project Portfolio

Engineering Excellence Proven

Over 300 completed projects across Hong Kong, the Greater Bay Area and mainland China — setting new benchmarks in underground engineering with RTBM rectangular pipe-jacking technology.

300+

Completed Projects

20km+

RTBM Tunnels

ZERO

Safety Incidents

13.04×9.61m

Largest Cross-section

389.7m

Longest Single Drive

68+

Representative Projects

Yuen Long South 'Qi Yuan' RTBM launch ceremony

Interior of rectangular pipe-jacking tunnel under construction

Overhead view of reception shaft construction

RTBM

Yuen Long South Underground Passage RTBM Project (Highway Crossing), Hong Kong

Yuen Long South Underground Passage (Road Crossing)

Yuen Long, Hong Kong2026

Project Brief

Section: 9.4m × 4.38m

Cover depth: 5.4m – 7.4m

Geology: Silt & silty soil

Challenges：No vertical reinforcement at launch shaft; extremely narrow receiving shaft; conventional reception infeasible

Key technical breakthrough ：1.Double-Row Steel Sheet Pile Launch Structure 2.Composite Thick Slurry Compensation Grouting (Hong Kong First) 3.Composite Thick Slurry Compensation Grouting (Hong Kong First)

Double-row steel sheet pilesRectangular pipe-jackingRoad crossingFirst application of composite grout compensation & deviation-correction technology

Metro · Intercity

Nansha-Zhuhai Intercity Railway Xiangshan Station Track Laying RTBM Engineering, Guangdong

First RTBM in intercity railway; deepest RTBM in China; receiving shaft adjacent to water channel

Station 9, Nansha–Zhuhai (Zhongshan) Intercity Rail (Wanqingsha–Xingzhong Section)2026

Cross-section area 125m²Jacking length 133.5mShield tunnel

Road · Tunnel

Metro Line 5 Grand Theater Station Turnback Line & Line 9 Transfer Passage RTBM Project, Shenzhen

Complex urban underground environment; proximity to existing metro infrastructure; strict ground deformation control requirements

Between Jiefang Road and Bao'an South Road, Shenzhen2025

Cross-section 10.2m × 6.6mGravelly cohesive soil & fully weathered rockSingle-line length 140.4m

Pedestrian · Passage

Shenzhen Huawei Banxuegang Science & Technology City Area Pedestrian Passage RTBM Project, Shenzhen

Dense urban development area; complex underground utilities; proximity to Huawei industrial park; strict settlement control

Shenzhen

Cross-section 10.2m × 6.6mFill soil & spheroidal weathered granite bouldersExcavation area 67m²

Municipal · Utility

The Zhuhai Xingye Expressway (North Section) Tunnel, Zhuhai

Large-section RTBM jacking beneath existing tram line & Meihua East Road

Intersection of Meihua East Road and Xingye Road2025

Excavation area 78m²Weathered granite bouldersCross-section 10.4m × 7.5m

Municipal · Road

Subaqueous RTBM Project Crossing the Beijing-Hangzhou Grand Canal, Suzhou

High water pressure under canal; complex water-rich strata; long-distance subaqueous jacking; environmental protection requirements for UNESCO heritage site

Xutao Road – Hengshan Road Canal Tunnel, Suzhou2023

Cross-section 9.8m × 5.9mExcavation area 58m²Fine sand & silt

Metro · Intercity

Utility Tunnel of Daxing International Airport Passing Beneath the Daguang Expressway, Beijing

Jacking beneath active Daguang Expressway; strict airport security protocols; complex utility coordination; zero tolerance for traffic disruption

Beijing2019

First of its kind in ChinaSingle drive 128.4mCross-section 9.1m × 5.5m

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