Sunward Xianxinghao Dual-Channel Slurry Shield Machine Powers Guangzhou Fangbai Intercity Railway
Building a High-Capacity Intercity Rail Corridor in the Greater Bay Area
As a key infrastructure project in the Guangdong-Hong Kong-Macao Greater Bay Area intercity rail network, the Fangcun to Baiyun Airport Intercity Railway is designed to strengthen Guangzhou’s air-rail integration corridor. In the Baiyun Station connecting-line large shield section, Sunward TBM has put the Xianxinghao dual-channel slurry shield machine into operation, providing a customized equipment solution for efficient and controlled tunneling.
The project places high demands on construction efficiency, tunnel quality, and ground safety. As a professional tunnel boring machine manufacturer and China shield machine manufacturer, Sunward developed the Xianxinghao slurry balance shield machine around the actual geological conditions, excavation sequence, and urban construction constraints of the line.
Strict Project Standards for Large-Diameter Shield Tunneling
The Baiyun Station connecting-line large shield section follows a demanding tunnel design standard. Its tunnel outer diameter reaches 11.8 meters, with an inner diameter of 10.8 meters and a ring width of 2 meters. A single shield machine will excavate the left and right double-track tunnels sequentially.
- Sequential double-tunnel excavation: one machine advances through both left and right tunnel drives.
- Efficient transfer and reassembly: after the left-line reception, the machine is transferred for secondary assembly and the next drive.
- Urban rail performance requirements: tunneling must balance progress, segment quality, settlement control, and safety management.
These conditions make the dual-channel slurry shield machine an essential equipment choice for stable excavation and reliable muck discharge.
Project overview of the Baiyun Station connecting-line large shield section.
Complex Ground Conditions Require a Customized Slurry Shield TBM
The tunnel alignment passes through highly variable strata, including soft clay layers, medium-to-coarse sand layers, and high-strength slightly weathered limestone. This mix of soft ground, sandy ground, and hard rock creates a typical composite geological environment for large-diameter slurry shield TBM operation.
The minimum net spacing between tunnel structures is only 1.4 meters, which raises the requirement for low-disturbance excavation, accurate face pressure control, and stable machine attitude. For such dense urban underground engineering, equipment adaptability and precision are decisive.
High-strength composite cutterhead designed for upper-soft/lower-hard and mixed rock strata.
Xianxinghao begins supporting the Fangbai Intercity Railway construction mission.
Three Core Advantages of the Xianxinghao Shield Machine
Dual-Channel Slurry Circulation
The system combines a direct discharge pipe with a screw conveyor and jaw crusher channel, improving muck discharge adaptability in composite strata and supporting smooth, efficient tunneling.
Pressurized Composite Cutterhead
A high-strength structure and small cutter spacing allow the machine to handle upper-soft/lower-hard formations and hard rock composite strata with greater cutting efficiency and stability.
Low-Disturbance Main Machine
The low-disturbance design helps reduce ground impact, protect nearby piles and existing structures, and strengthen safety control for dense urban shield tunneling.
Video Highlight: Xianxinghao in Action
Sunward Xianxinghao dual-channel slurry shield machine project video.
With customized technology and reliable equipment performance, Sunward Xianxinghao is helping solve construction challenges in the Fangbai Intercity Railway project. The machine reflects Sunward’s capability in large-diameter slurry shield TBM design, intelligent manufacturing, and project-oriented service.
Customized Shield Machines for Demanding Underground Projects
From slurry balance shield machines to large-diameter TBM solutions, Sunward TBM provides specialized equipment and engineering support for rail transit, water conservancy, mining, and urban underground space projects worldwide.
