A mobile prestressed support system and method of use thereof

Abstract

The invention discloses a movable prestress supporting system and a using method thereof. The system is characterized by comprising a main frame type steel support, a backrest counter-force seat, an inverted arch counter-force seat, a construction side counter-force seat, an arch bottom counter-force seat, a supporting protection support bottom plate, an under-plate movable wheel rail and a wheelrail vertical telescopic device; the main frame type steel support comprises eight main structure columns which form a rectangle; the backrest counter-force seat comprises a transverse telescopic backrest counter-force seat support and a backrest stress buffer block; the inverted arch counter-force seat comprises a vertical telescopic inverted arch counter-force seat support and an inverted arch stress buffer block; the construction side counter-force seat comprises a transverse telescopic construction side counter-force seat support and two symmetric construction side stress buffer blocks; the arch bottom counter-force seat comprises a vertical telescopic arch bottom counter-force seat support and an arch bottom stress buffer block; the supporting protection support bottom plate is fixedly arranged at the lower end of the main structure column. The system has the advantages of being movable and capable of achieving quick supporting, providing recoil force for a contact channel headingmachine and achieving longitudinal and uniform load distribution.

Description

technical field [0001] The invention belongs to the field of underground engineering, and in particular relates to a movable prestressed support system and an application method thereof. Background technique [0002] In recent years, the shield tunneling method has been widely used in engineering construction due to its good construction quality, safety and low impact on the surrounding environment. In shield construction, there are construction situations of tunnel side openings, including the construction of communication passages between two single-line interval tunnels and the construction of air shafts. method and small shield method, etc. Among them, the small-scale shield method adopts mechanical excavation, which not only solves the problem of starting in a small space, but also can easily control the construction axis of the communication channel. However, during the excavation process, the shield machine will exert pressure on the tunnel, especially the unstable ...

AI Technical Summary

Problems solved by technology

Conventional support and protection brackets have the following deficiencies: (1) It is inconvenient to disassemble and assemble in the narrow space of the tunnel, especially the steel wedge of the joint pin part is not easy to remove under pressure; Provide good recoil force for the shield machine, and uneven force on the segment will easily cause deformation; (3) It cannot be used repeatedly; (4) It is difficult to adjust the axial force of the support during the construction process

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