Tunnel segment secondary lining device and method

Abstract

The invention discloses a tunnel segment secondary lining device and method. The device comprises a supporting device, a segment assembling machine, a segment hoisting device, and a trolley provided with a pea gravel injection system and a binary slurry injection system, wherein a hydraulic system, an air compressing system and an electric control system are arranged on the trolley, the supporting device comprises a supporting shield, supporting shoes are symmetrically arranged at the lateral ends of the supporting shield, and a thrust cylinder is arranged on the supporting shield. The method comprises the steps that the thrust cylinder of the supporting device stretches out, and the whole supporting device moves forwards; the supporting shoes of the supporting device stretch out, and the thrust cylinder retracts, so that a segment assembling space is reserved; precast segments are assembled with the segment assembling machine; when the segments are assembled by certain length, secondary lining gap refilling is conducted. Secondary lining is conducted by means of the precast segments, high workload of pouring concrete in a tunnel according to the traditional technology is avoided, the strength of the tunnel is guaranteed by means of the precast segments, and then the service life of the tunnel is ensured.

Description

technical field [0001] The invention relates to a tunnel construction equipment and method, in particular to a tunnel segment secondary lining equipment and method. Background technique [0002] With the application of shield tunnels more and more widely, from the early road and railway tunnels to today's subways, cables, drainage channels, etc. The diversified applications of tunnels have made higher requirements for the structural strength, service life and waterproof ability of tunnels. Excavating tunnels in relatively narrow areas is usually not suitable for shield machine operations, and methods such as open cut, concealed cut, and cover excavation are often used. These methods often use reinforced concrete to reinforce the excavated tunnels, and use reinforced concrete to reinforce them. Tunnels often have poor waterproof performance and weak structural strength, which requires secondary lining segments to meet the special requirements of the tunnel. [0003] The tra...

AI Technical Summary

Problems solved by technology

[0004] The construction of the traditional secondary lining technology scheme is complicated, time-consuming and labor-intensive, and cracks often appear in the poured segments due to temperature, load and other reasons, which cannot achieve the function of waterproofing the tunnel and seriously affect the service life of the tunnel

Moreover, the void problem of the secondary lining vault is also very common, resulting in insufficient lining thickness, deterioration of structural mechanical properties, and resulting lining cracks, water leakage, block loss or even collapse, which brings serious health and safety problems to the tunnel. many adverse effects

Images