Geomechanics.io

  • Free Tools
Sign UpLog In

Geomechanics.io

Geomechanics, Streamlined.

© 2026 Geomechanics.io. All rights reserved.

Geomechanics.io

CMRR-ioGEODB-ioHYDROGEO-ioQCDB-ioFree Tools & CalculatorsBlogLatest Industry News

Industries

MiningConstructionTunnelling

Company

Terms of UsePrivacy PolicyLinkedIn
    AllGeotechnicalMiningInfrastructureMaterialsHazardsEnvironmentalSoftwarePolicy
    Projects

    Xihe on Tung Chung Line down-track: TBM turnback method and risks for tunnel engineers

    June 1, 2026|

    Reviewed by Tom Sullivan

    Xihe on Tung Chung Line down-track: TBM turnback method and risks for tunnel engineers

    First reported on Tunnelling Journal – News

    30 Second Briefing

    TBM Xihe, a 7.3m-diameter, 100m-long, 1,000-tonne Herrenknecht slurry machine, has completed the up-track drive to the future Tung Chung West Station and has begun boring the down-track tunnel towards Tung Chung Station for MTR’s Tung Chung Line Extension in Hong Kong. The Bouygues Travaux Publics–Dragages Hong Kong JV turned the TBM underground within the launch shaft using a push-pull method and self-propelled modular transporter, avoiding full disassembly and surface transport. About 1.3km of new twin-bore tunnels are being driven close to existing rail and urban structures, with commissioning targeted for 2029.

    Technical Brief

    • Purpose-built Herrenknecht slurry TBM is configured for highly variable ground conditions along the Tung Chung alignment.
    • Underground rotation used a push–pull system combined with a self-propelled modular transporter within the launch shaft.
    • Avoiding full disassembly eliminated heavy lifting and surface transport cycles typically required for TBM turnaround.
    • On-site reorientation and reassembly materially shortened the tunnelling programme relative to conventional shaft breakout and re-launch.
    • Shaft-confined turnaround reduced surface construction footprint, limiting disturbance to adjacent urban communities and traffic.
    • Tunnelling near existing MTR assets demands tight control of ground movements to protect operational rail infrastructure.
    • Proximity to dense urban development implies stringent settlement monitoring and real-time response during slurry TBM operations.

    Our Take

    Within our 351 Infrastructure stories, Hong Kong rail schemes involving MTR Corporation tend to deliver on relatively tight urban programmes, so a 2029 commissioning window for the Tung Chung Line Extension likely assumes minimal interface risk with existing Tung Chung Station operations.

    A 7.3 m slurry TBM from Herrenknecht for a 1.3 km twin-bore drive suggests ground and groundwater conditions under Tung Chung New Town and towards Lantau Island are being treated as complex enough to justify full slurry management rather than EPB or drill‑and‑blast alone.

    Bouygues Travaux Publics and Dragages Hong Kong appear frequently in our database on constrained Asian urban tunnelling jobs, signalling that MTR Corporation is continuing to favour contractors with a track record in mixed-face and soft-ground metro works rather than spreading risk to newer market entrants.

    Geotechnical Software for Modern Teams

    Centralise site data, logs, and lab results with GEODB-io, CMRR-io, and HYDROGEO-io.

    No credit card required.

    • Save and export unlimited calculations
    • Advanced data visualisation
    • Generate professional PDF reports
    • Cloud storage for all your projects

    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

    Related Articles

    Implenia/Marti JV MehrSpur Zurich–Winterthur: design and risk notes for engineers
    Infrastructure
    in 6 months

    Implenia/Marti JV MehrSpur Zurich–Winterthur: design and risk notes for engineers

    Swiss Federal Railways has awarded an Implenia/Marti 50:50 joint venture five of six MehrSpur Zurich–Winterthur lots worth just under CHF 1.7 billion, including the 8.3 km Brüttener tunnel (Lot 240) with twin 10 m diameter single-track tubes and a 1 km spur to Zurich Airport. TBM excavation will start in August 2029, with a roughly ten-year construction phase using BIM for planning and execution and extensive special foundations, earthworks and embankments. Additional works cover full redevelopment of Dietlikon station, about 6 km of new track across Dietlikon and Wallisellen sections, multiple underpasses, bridges and the Neumühle railway bridge and Storchen underpass near Winterthur.

    Sydney Metro Stations Package West: design and delivery notes for engineers
    Infrastructure
    in 3 months

    Sydney Metro Stations Package West: design and delivery notes for engineers

    Gamuda Engineering has secured the Sydney Metro Stations Package West as principal contractor, covering design and construction of five new underground stations at Westmead, North Strathfield, Burwood North, Five Dock and The Bays on the 24km Sydney Metro West line between Greater Parramatta and the CBD. The scope includes deep station boxes, entrances and access points, full station fit-out and integration with surrounding precincts, with Laing O’Rourke and DT Infrastructure joining as MetroVista delivery partners. Site works are scheduled to start on Monday, 5 January 2026.

    Rainbow Creek Bridge replacement: design and staging notes for civil engineers
    Infrastructure
    about 14 hours ago

    Rainbow Creek Bridge replacement: design and staging notes for civil engineers

    Construction has commenced on a new reinforced concrete replacement for the 1947 timber Rainbow Creek Bridge on Traralgon–Maffra Road between Cowwarr and Heyfield in regional Victoria. The project includes realignment of both road approaches to improve geometry and load performance compared with the ageing timber structure, which is likely constrained under current heavy vehicle configurations. For geotechnical and civil teams, key tasks will centre on new creek-crossing foundations, approach embankment works and managing construction staging to maintain regional traffic connectivity.

    Related Industries & Products

    Tunnelling

    Specialised solutions for tunnelling projects including grout mix design, hydrogeological analysis, and quality control.

    Construction

    Quality control software for construction companies with material testing, batch tracking, and compliance management.

    QCDB-io

    Comprehensive quality control database for manufacturing, tunnelling, and civil construction with UCS testing, PSD analysis, and grout mix design management.