Equipment and method for secondary lining of tunnel segment

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 increasing application of shield tunnels, from the early road and railway tunnels to today's subways, cables, water intake and drainage channels, etc. The diversified application of tunnels makes the structural strength, service life and waterproof ability of tunnels have higher requirements. Excavation of tunnels in relatively small areas is usually not suitable for shield machine operations. Open excavation, undercut excavation and cover excavation are often adopted. These methods are often reinforced by reinforced concrete to strengthen the excavated tunnel and reinforced concrete. The tunnels often have poor waterproof performance and weak structural strength. This requires secondary lining of the tunnel segments to meet the special requirements of the tunnel. [0003] The tr...

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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

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