Tunnel mobile support structure and tunnel construction method under protection thereof

Abstract

The invention discloses a mobile tunnel supporting structure and a tunnel construction method implemented under the protection effect of the mobile tunnel supporting structure. The mobile supporting structure consists of a plurality of boxes which are connected to one another in a gripped manner according to the shape of the outer contour of a tunnel; a shield which extends rearwards is arranged at the tail of each box; and under the protection effect of the mobile supporting structure consisting of the boxes which are gripped to form a ring and the shields at the tails of the boxes, tunnel excavation and lining can be carried out safely and quickly. The tunnel construction method implemented under the protection effect of the mobile tunnel supporting structure mainly comprises the following steps of land preparation, assembly of the mobile supporting structure, mounting debugging of construction equipment, positioning of the mobile supporting structure and positioning of the equipment, tunnel excavation and assembly or primary supporting construction of prefabricated members. By the mobile supporting structure, slidable tunnel advance supporting can be implemented; and multi-ring tunnel advance supporting construction is not required under the condition of a complex formation, the equipment does not need to be detached or mounted repeatedly, cost is reduced, and the work efficiency is improved. Moreover, the construction method has high safety and high universality, and is convenient and easy to implement.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a mechanized mobile support structure and a tunnel construction method under protection thereof. Background technique [0002] Tunnel construction can be mainly divided into manpower-based mining method and mechanical-based shield method. At present, the urban subway section is mainly constructed by the shield tunneling method, while most other tunnels still use the human-based mining method. As tunnel construction faces complex geological conditions, ground environment, and increasing labor costs, the mechanization level of mine construction needs to be improved urgently. Especially in some weak surrounding rock conditions, mining method construction is particularly difficult. In order to ensure construction safety and effectively control the deformation of the surrounding rock, weak surrounding rock needs to be strengthened or supported in advance, such as grouting, pipe sh...

AI Technical Summary

Problems solved by technology

As a temporary support measure, these advance reinforcement or advance support cannot be used as a part of the lining structure to participate in the force calculation, and the pipe shed for the advance support cannot be reused, and the equipment needs to be evacuated and installed repeatedly to facilitate the advance support and Tunnel excavation is carried out alternately, which not only increases the project cost but also greatly increases the construction period

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