A Municipal Shield Tunnel

Abstract

The invention discloses a municipal shield tunnel, which comprises a plurality of serially connected prefabricated pipes and an arc-shaped steel ring beam, wherein a plurality of installing holes are embedded in the inner wall of each prefabricated pipe in the circumferential direction; the steel ring beam is tightly pasted on the inner wall of each prefabricated pipe, and is provided with an installing side frame facing the axis of a tunnel; a plurality of first support frames and / or second support frames are uniformly distributed and connected in the circumferential direction of the installing side frame; and the second support frames are arranged outside the installing side frame corresponding to the waist part of the tunnel and are longer than the first support frames. The municipal shield tunnel has the advantages that the installing holes are embedded in the prefabricated pipes for replacing the welding or hole drilling mode in the prior art; construction personnel can more conveniently install arch-shaped beams in the tunnel; meanwhile, the arc-shaped beams are tightly pasted on the prefabricated pipes; the load bearing capability of the tunnel is enhanced; in addition, the first support frames and the second support frames used for placing cables, pipelines and auxiliary facilities are uniformly distributed on the arch-shaped beams; the space is reasonably utilized; and the pipe capacity of the tunnel is greatly reduced.

Description

technical field [0001] The invention relates to a tunnel, in particular to a municipal shield tunnel. Background technique [0002] The municipal shield tunnel is built underground in the city and is used as a tunnel for laying underground pipelines of various municipal facilities. Due to the need to further develop industry and improve residents' cultural and living conditions in cities, more and more underground pipelines are used for municipal facilities, such as power supply, tap water, sewage, heating, hot water, gas, communication, power supply, etc. The development of the pipeline system requires the construction of a large number of municipal tunnels in order to fundamentally solve the problem of the operation level of the underground pipeline system of various municipal facilities. When arranging underground passages, pipelines, and cables, there should be a strict sequence and system to avoid excavating streets and squares during maintenance and reconstruction. ...

AI Technical Summary

Problems solved by technology

Although this construction method can fasten and install the steel ring beam, the space size deviation caused by the tunnel construction is transmitted to the cable support through the inner groove of the tunnel, and then to the support cross arm, which makes it difficult to install the support cross arm horizontally and affects the surface of the support. The normal arrangement of pipelines, cables, etc.

[0006] 3. When the bracket cross arm is fixed to the tunnel and other installation processes are welded, a lot of smoke will be generated in the narrow tunnel, and the construction environment is extremely harsh.

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