Through type large-section tunnel underground excavation lining trolley and tunnel underground excavation lining construction method

Abstract

The invention discloses a through type large-section tunnel underground excavation lining trolley and a tunnel underground excavation lining construction method, and aims to solve the problem that great risk is caused to tunnel construction as a suspension period is not avoided as the construction engineering of secondary lining is not sufficiently considered in the conventional trolley. The through type large-section tunnel underground excavation lining trolley comprises a trolley support system, a trolley through bracket system and a trolley mold plate system, wherein the systems are all provided with pressure sensors and data acquisition and display devices; the data acquisition and display devices are used for acquiring pressure sensor signals and used for displaying real-time pressure. By adopting the through type large-section tunnel underground excavation lining trolley disclosed by the invention, the problem that the suspension period is caused when temporary supports are dismounted in different steps in a large-section tunnel can be effectively solved, the whole dismounting process is supported by the trolley, stress conversion can be achieved, safety risk can be reduced, a mold can be made at one time in the casting process, the working period can be shortened, and the working intensity can be alleviated.

Description

technical field [0001] The invention belongs to the technical field of tunnel excavation equipment and methods, and in particular relates to a walk-through large-section tunnel excavation lining trolley and a tunnel excavation lining construction method realized by using the trolley. Background technique [0002] Lining trolleys are widely used in subways, highways, railways and other fields. Lining trolleys can effectively reduce labor intensity and improve the operational efficiency of secondary lining construction. At present, the structure of the lining trolley is basically similar, mainly composed of formwork system, hydraulic system, walking system, support system, etc., which are formed as a whole through welding and bolt connection. [0003] When typical tunnel construction methods such as CRD construction method (cross partition wall method) and CD construction method are used for construction, a temporary support system needs to be reserved during the construction ...

AI Technical Summary

Problems solved by technology

[0003] When typical tunnel construction methods such as CRD construction method (cross partition wall method) and CD construction method are used for construction, a temporary support system needs to be reserved during the construction process to maintain the stability of the tunnel, but the temporary support system needs to be removed during the secondary lining construction process. support, leading to the emergence of unsupported empty periods in the process of removing temporary supports, increasing construction risks

In China, the patent No. "201510245418.3" discloses a subway tunnel lining trolley, which only considers the construction space in the tunnel, and does not consider the safety of the temporary support removal process; The lining trolley disclosed in 201510573530.X” fully considered the self-weight and cost of the trolley, and lacked consideration of the impact of temporary support during the construction process.

The mechanical performance of the existing trolley has been continuously improved, but the construction process of the secondary lining is still insufficiently considered, and the appearance of the empty period cannot be avoided. The process of removing the temporary support only relies on engineering experience, which brings great risks to the tunnel construction

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