In-situ 3D printing of secondary lining and propulsion device based on main beam TBM

By integrating in-situ 3D printing module and three-dimensional motion module on TBM, combined with the scanning technology of structured optical cameras, in-situ manufacturing and automated construction of tunnel secondary lining are achieved, solving the problems of high construction costs, high complexity, and quality dependence on manual experience in the existing technology, and improving construction efficiency and quality stability.

CN119145884BActive Publication Date: 2025-03-18ZHEJIANG UNIV
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Patent Information

Application Number
CN202411630728.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-03-18
Estimated Expiration
2044-11-15

AI Technical Summary

Technical Problem

The existing secondary lining construction method has problems such as high construction cost, high complexity, quality dependent on manual experience and low degree of automation, resulting in low construction efficiency and safety hazards.

Method used

The in-situ 3D printing secondary lining and propulsion device based on the main beam TBM is adopted, and the three-dimensional motion module and the in-situ 3D printing module are integrated. The structured optical camera scans the tunnel section morphology and adaptively plan the printing process parameters to realize the in-situ manufacturing and automated construction of the secondary lining.

Benefits of technology

It reduces construction costs and labor intensity, improves construction efficiency and quality stability, realizes automatic construction and intelligent restoration of secondary lining, simplifies the construction process and reduces system complexity.

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Abstract

The present invention proposes an in-situ 3D printing secondary lining and propulsion device based on a main beam type TBM. The device includes a main beam, a three-dimensional motion module installed at one end of the main beam, a propulsion module installed at the other end of the main beam, and an in-situ 3D printing module installed on the three-dimensional motion module; the three-dimensional motion module is used to control the movement speed of the in-situ 3D printing nozzle in the circumferential, radial and axial directions of the tunnel, and the in-situ 3D printing module includes a nozzle and a structured light camera, and the structured light camera is used to scan and generate the tunnel wall morphology, provide data support for planning printing process parameters, and then in-situ manufacture a secondary lining with high mechanical reliability; the propulsion module supports and propels the device as a whole along the tunnel under the premise of ensuring that the in-situ 3D printed secondary lining is not damaged. The present invention has great application potential in realizing adaptive control of secondary lining construction parameters and intelligent construction.
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