TBM Mobile Emergency Spray Mixing System and Method

By designing a TBM mobile emergency spraying system, the system utilizes a self-propelled chassis and lifting base to achieve precise construction of the spraying terminal, solving the problems of equipment space occupation and low construction efficiency in existing technologies, and improving the flexibility and efficiency of emergency spraying.

CN120739545BActive Publication Date: 2026-07-17CHINA RAILWAY CONSTR HEAVY IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY CONSTR HEAVY IND
Filing Date
2025-07-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing TBM emergency spraying systems occupy a large amount of equipment space, affecting construction efficiency. Furthermore, the preparation work for temporarily installing emergency spraying systems is extensive, reducing the speed of operation response.

Method used

A TBM mobile emergency spraying system was designed, including a self-propelled chassis, a lifting base, and a ring boom. The self-propelled chassis moves to the working position, and the lifting base and translation components are used to adjust the position of the boom seat to achieve precise spraying construction at the spraying terminal.

Benefits of technology

When not occupying equipment space, it can be moved to the main unit area and quickly moved to the working position when needed, achieving precise spraying and mixing, improving construction efficiency and the applicability of the equipment.

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Abstract

This invention relates to the field of tunnel construction technology, specifically to a mobile emergency shotcrete system and method for a TBM. The system includes: a self-propelled chassis for traveling on the upper platform of the TBM main beam, the self-propelled chassis including a chassis housing, traveling wheels, and a translation component; a lifting base, the lifting base including a telescopic seat, a boom seat, and a lifting drive component; and a ring boom, the ring boom including a telescopic ring arm and a shotcrete terminal, the telescopic ring arm being connected to the boom seat, and the shotcrete terminal including a shotcrete component and a radial drive component, the radial drive component being connected between the shotcrete component and the ring arm. When not in use, this invention can be moved to the TBM main unit area, eliminating the need for permanent installation in the main unit area and thus reducing equipment space. When encountering adverse geological conditions and requiring emergency shotcrete construction, it can self-propelledly move from the rear storage area of ​​the main unit to the working position, solving the technical problem of emergency shotcrete systems occupying a large amount of equipment space.
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