BLOG
2024-08-06
Shield Tunneling Construction Procedures
Before constructing using the shield method, a detailed geological survey of the construction area is required to determine the tunneling conditions, predict the state of the surrounding rock, and finalize the tunnel alignment. The geological survey also includes a thorough investigation of groundwater conditions, enabling the design, installation, and commissioning of waterproofing systems tailored to the specific groundwater situation.
2024-08-06
Characteristics of the Tunnel Shield Method
The shield tunneling method is widely used due to its distinct advantages: ① Excavation and lining operations are carried out under the protection of the shield, ensuring sufficient construction safety.
2024-08-06
Common Tunnel Construction Methods
Common tunneling methods include the full-face method, step method, circular island-pit method (with a reserved soil core), double-sided pilot tunnel method, central-diaphragm method, cut-and-cover method, tunnel boring machine method, open-cut method, cover-and-lift method, shallow-buried tunnel method, shield method, and immersed tube method, among others.
2024-08-06
The advantages of the shield method
The advantages of the shield tunneling method primarily include reduced ground settlement, minimized impact on surrounding structures, no limitations imposed by surface conditions, suitability for construction at great depths and under high groundwater pressure, relatively low costs, high construction efficiency, advanced automation and intelligent features, and significantly lower labor intensity.
2024-08-06
Key Points for Ground Settlement Control in Shield Tunneling Construction
Due to the nature of subway tunnel shield construction—being an underground project with a complex surrounding environment and inherently high risks—it is prone to incidents such as ground settlement and deformation during construction.
2016-10-24
Tunnel Boring Machine Operator Learns the Kneeling Method On-Site—Photo by Chen Guoping
Tunnel Boring Machine Operator Learns the Kneeling Method On-Site—Photo by Chen Guoping