Rail longitudinal slope construction method

By inspecting and reinforcing the longitudinal slope section, assembling the launching bracket and tunnel boring machine (TBM), tilting the TBM, and assembling and fixing the negative ring segment structure, the problem of difficult control of the TBM's launching attitude under large longitudinal slope conditions was solved, improving construction safety and efficiency.

CN116464457BActive Publication Date: 2026-06-16CHINA RAILWAY 20TH BUREAU GRP SOUTHERN ENG CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY 20TH BUREAU GRP SOUTHERN ENG CO LTD
Filing Date
2023-05-16
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Under steep longitudinal slope conditions, the initial attitude of the tunnel boring machine is difficult to control, resulting in poor structural stability and reduced construction safety.

⚗Method used

By inspecting and reinforcing the longitudinal slope section, assembling the launching bracket and hoisting it to the construction section, installing the tunnel boring machine (TBM) and setting it at an angle, driving the TBM to excavate, and assembling the negative ring segment structure for fixation, the stability of the TBM and the construction section is ensured.

🎯Benefits of technology

It improves construction safety and structural stability, reduces assembly difficulties, prevents deformation of the negative ring segment structure, and improves construction efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a track longitudinal slope construction method, comprising the following steps: detecting and reinforcing a construction section of a longitudinal slope section; assembling a starting bracket, hoisting the starting bracket to the construction section, positioning and installing the starting bracket, and reinforcing the starting bracket; assembling and hoisting a shield machine to the construction section, so that the shield machine is installed on the starting bracket, and the shield machine is arranged to be inclined to a vertical plane where the construction section is located; and driving the shield machine to dig; assembling and hoisting a negative ring segment structure to a dug part of the construction section; and fixing the negative ring segment structure. The technical scheme can improve installation stability and construction safety.
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