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2022-08-22
The 2022 International Summit on Key Technologies for Tunnel Boring Machines (TBMs) and Excavation, as well as Remanufacturing Technologies, was grandly held from August 19 to 21, 2022, at the Guanghua Hotel in Zhengzhou. The theme of this forum was “Digitalization and Intelligent Construction of Tunnel Boring Machines (TBMs).”
2023-12-31
Fujian Zhongtian 2023 Year-End Summary
Technological innovation is the cornerstone of enterprise development, while service provides the guarantee for its growth. In 2023, Fujian Zhongtian—including Fujian Zhongtian Transportation, Fujian Zhongtian Heavy Industry, Hunan Zhongtian Rock Drilling, and Sanming Kaitai—achieved outstanding results once again. The top ten events have been selected and are hereby made public.
2024-01-01
The Hunan Zhongtian Rock Drilling Technology Center, affiliated with Fujian Zhongtian Transportation Technical Service Co., Ltd., spent one year and successfully developed the sixth-generation Knei-effect material in December 2023.
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.