Air duct formed by expanding excavation of multiple layers of temporary construction channels and construction method

Abstract

The invention discloses an air duct formed by expanding excavation of multiple layers of temporary construction channels and a construction method, the air duct comprises a temporary construction vertical shaft, one side of the temporary construction vertical shaft is provided with the temporary construction channels, and six layers of temporary construction channels are mounted. Air duct middle pilot tunnels are arranged at the left sides of the temporary construction channels, and four layers of air duct middle pilot tunnels are mounted. Air duct left pilot tunnels are arranged at the left sides of the air duct middle pilot tunnels, and four layers of air duct left pilot tunnels are mounted. A station body is arranged at one sides of the temporary construction channels, the air duct middle pilot tunnels and the air duct left pilot tunnels. By means of the air duct construction method, the problems that in a traditional method, station body construction and air duct construction occupy places correspondingly, construction supporting facilities are arranged correspondingly, economy is poor, and underground space is wasted are solved; and the temporary construction channels for underground excavation of the station body construction is combined with the station air duct, one piece of construction land is saved, a set of construction supporting facilities is saved, the temporaryconstruction channels needing to be abandoned are reasonably utilized, investment is saved, and waste of underground space is avoided.

Description

technical field [0001] The invention relates to the technical field of subway air ducts, in particular to an air duct formed by expanding and excavating a multi-layer temporary construction channel and a construction method. Background technique [0002] In subway underground excavation stations, temporary construction passages are mainly used for the construction of the main body of the station. After the construction of the main body of the station is completed, the temporary construction passages need to be backfilled as an abandoned project. [0003] The construction method of the traditional subway air duct is to set a construction shaft separately above the air duct, and construct the primary support and secondary lining of the air duct through this shaft. In order to construct the subway air duct, it is necessary to set up various supporting facilities such as a construction site for air duct construction, gantry cranes, soil bins, and sand and gravel bins. After the...

AI Technical Summary

Problems solved by technology

[0006] 2. Temporary construction passages are treated as abandoned projects, waste of work and waste, resulting in a substantial increase in project costs and waste of underground space;

[0007] 3. Two construction sites need to be occupied, which increases the difficulty of urban subway construction, which is already difficult to occupy land

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