Method for building urban underground tunnel shield cutter repairing space with preset reinforcing pile groups

Abstract

Discloses is a method for building urban underground tunnel shield cutter repairing space with preset reinforcing pile groups. A rectangular vertical shaft (1) and a transverse tunnel (4) are built additionally to avoid important underground pipelines (3) or underground buildings (2). Three rows of glass fiber reinforced concrete piles of the same pore diameters are constructed in parallel on a cross section of a to-be-excavated tunnel through the transverse tunnel, namely a first row of glass fiber reinforced concrete piles (8), a second row of glass fiber reinforced concrete piles (7) and a third row of glass fiber reinforced concrete piles (9). The tops of the glass fiber reinforced concrete piles are connected through a reinforced concrete cover plate (5) to form the preset reinforcing pile groups. When a shield (10) is excavated to the first row of glass fiber reinforced concrete piles and cuts the same, and a cutter (11) repairing space (6) is built on the second row of glass fiber reinforced concrete piles. By the repairing space, possibility for repairing the shield cutter is provided, cutter repairing time is shortened, and normal construction of shield is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling, in particular to a method for establishing a repair space for a shield cutter head of an urban underground tunnel by preset reinforcement pile groups. Background technique [0002] With the development of urban underground tunnels, the buried depth, excavation length and excavation diameter of underground tunnels have all developed, and the use of shield construction has become more common. When the diameter of the shield machine is large and the excavation distance is long, it is particularly important to repair the cutter head of the large diameter shield machine in time. Usually, when the shield cutter head is worn out, a shaft needs to be excavated above the tunneling ground of the shield tunneling machine to expose the repair area of ​​the cutter head, so that manual repair can be carried out under normal pressure conditions, and the above shield tunneling ground will be Frequent e...

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Problems solved by technology

[0004] 1. If there are underground pipelines at the excavation site of the shaft, the pipeline needs to be relocated first. The pipeline relocation not only takes a long time, but also costs a lot;

[0005] 2. If there is a building at the excavation place of the shaft, the ground building needs to be demolished, and the demolition of the building will not only take a long time, but also cost a lot;

[0006] 3. If the excavation site of the shaft is located under an important traffic artery or under the existing underground structures, and the traffic cannot be cut off or the underground structures cannot be demolished, the shaft will not be excavated

But up to now, there have been no related reports on the method of establishing the repair space of the shield cutter head of the urban underground tunnel by presetting the reinforcement pile group

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