Tunnel vault empty early-warning device for formwork trolley

Abstract

The invention belongs to the technical field of tunnel secondary lining construction, and discloses a tunnel vault empty early-warning device for a formwork trolley. The tunnel vault empty early-warning device comprises a casing pipe, an electrode fluid level switch and an electric control box. The upper end of the casing pipe jacks the tunnel vault, and the lower end of the casing pipe penetratesthrough a secondary injecting hole of a top formwork and is fixedly connected with the top formwork. A plurality of overflow grooves are formed in the top of the casing pipe. The electrode fluid level switch is arranged in the casing pipe. The electric control box is electrically connected with the electrode fluid level switch. The device is convenient to detach and can be reused. The functions of secondary injecting and pressure detecting are integrated. Tunnel vault empty can be effectively reduced. The quality of tunnel secondary lining construction is improved.

Description

technical field [0001] The invention belongs to the technical field of secondary lining construction of tunnels, and in particular relates to a tunnel vault cavity early warning device for formwork trolleys. Background technique [0002] Vault void phenomenon, as the most common tunnel problem, has attracted more and more attention from experts in the field of tunnel construction, because vault voids will lead to complex and uncontrollable forces on the lining structure, which will easily cause changes in the bending moment at the vault and lead to Cracks on the upper edge of the secondary lining lead to water leakage and other diseases. Vault voids are a stubborn problem in tunnel construction. At present, there is no effective solution for domestic construction. Contents of the invention [0003] The object of the present invention is to address the above existing problems and deficiencies, and provide a tunnel vault cavity warning device for formwork trolleys, which can...

AI Technical Summary

Problems solved by technology

[0002] Vault void phenomenon, as the most common tunnel problem, has attracted more and more attention from experts in the field of tunnel construction, because vault voids will lead to complex and uncontrollable forces on the lining structure, which will easily cause changes in the bending moment at the vault and lead to Cracks on the upper edge of the secondary lining lead to water leakage and other diseases. Vault voids are a stubborn problem in tunnel construction. At present, there is no effective solution for domestic construction.

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