Shield tunneling and shallow tunneling combined construction method for building underground station

Abstract

A shield tunneling method combined with the shallow construction of the subway station construction method pertains to underground construction technology. The invention of the detailed construction methods as follows: 1) direct Shield Construction Terminal; 2) apply for soil pile around the shield tunnel lateral at a certain distance; 3) set up a temporary support columns in the shield tunnel, and apply for prestressed tightwire on the portrait of the canal slice; 4) use of shallow mining branch excavation intermediate platform / station office of the tunnel, apply for the initial support (or secondary lining); 5) grouting the soil side of the canal slice in the platform / station office of the tunnel; 6) excavate passengers evacuate horizontal channel that leading to shield tunnel, apply for the initial support; 7) remove the openings canal slice at the cross-channel, apply for secondary lining to retain the canal slice and cross-channel early support and secondary lining maintain good connection; 8) dismantle all the temporary support, apply platform board , complete the construction of the station. The invention can improve the quality of subway construction projects, reduce project costs, shorten the construction period.

Description

technical field [0001] The invention relates to a construction method for constructing a subway station by combining a shield tunneling method and a shallow buried underground excavation method, and belongs to the technical field of underground construction engineering. Background technique [0002] In order to speed up the subway construction speed, improve the project quality, and ensure construction safety, as many subway tunnels as possible should be constructed using the shield tunneling method. However, there are large contradictions in the construction organization between the current shield tunnel and the station construction, and the construction speed of the two is quite different, resulting in low utilization rate of the shield machine, frequent disassembly, U-turn, and idle work in the tunnel. The serious phenomenon prevents the advantages of shield tunneling method in fast construction from being brought into play, and at the same time may bring about greater co...

AI Technical Summary

Problems solved by technology

However, there are large contradictions in the construction organization between the current shield tunnel and the station construction, and the construction speed of the two is quite different, resulting in low utilization rate of the shield machine, frequent disassembly, U-turn, and idle work in the tunnel. The serious phenomenon prevents the advantages of the shield tunneling method from being brought into full play, and at the same time may bring about a relatively large construction period risk, which greatly restricts the application of the shield tunneling technology in the subway project.

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