Construction method for auxiliary air duct structure of underground excavation station

A construction method and station technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of large amount of cross-channel excavation, long construction period, and high construction cost, so as to shorten the construction period, reduce construction costs, The effect of reducing the construction scale
CN105298501AActive Publication Date: 2016-02-03SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
Publication Date
2016-02-03

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Abstract

The invention discloses a construction method for an auxiliary air duct structure of an underground excavation station. The method at least comprises station transverse passageway construction and air duct transverse passageway construction. The construction method includes the following construction steps that first, a vertical well out of the ground range of an air duct is constructed by the adoption of an inverted-hanging well wall method; second, temporary supports are arranged in the vertical well; third, a horsehead reinforced ring beam is constructed; fourth, a station transverse passageway advance support with the arch portion arranged in a 180-degree mode is driven; fifth, an air duct transverse passageway is excavated on the half side; sixth, a station transverse passageway and the air duct transverse passageway are back-filled to an air duct structure bottom plate, an air duct secondary lining structure is back-constructed, and the integral type structure is completed. Due to the facts that the auxiliary air duct structure is constructed through the underground excavation method and only the half-side air duct is subjected to underground excavation to be adopted as station transverse passageway pilot tunnels, the construction scale of the underground excavation station transverse passageway is reduced, the construction period is shortened, and the construction cost is lowered.
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Description

technical field

[0001] The invention relates to the technical field of underground engineering construction, in particular to a construction method for an auxiliary air duct structure of an underground excavation station. Background technique

[0002] With the rapid and sustainable development of my country's urban economy, urban road traffic conditions are becoming increasingly tense, and underground transportation station transportation has gradually become the main traffic artery for large-capacity rapid public transportation systems. At present, for underground stations, the open-cut method or the underground method is usually adopted. However, due to the large construction area of ​​the open-cut method, the surrounding commercial and residential buildings are dense, the traffic is heavy, and the constraints of dense underground pipelines and underground structures make the application of the open-cut method subject to certain restrictions.

[0003] The underground exca...

Claims

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