Cable tunnel shaft enclosure structure and shield machine cutting construction method thereof

Abstract

The invention discloses a cable tunnel shaft enclosure structure, which is provided with a reinforcement structure formed by connecting an upper reinforcement cage, a middle FRP reinforcement cage and a lower reinforcement cage. At the same time, the invention discloses a shield machine cutting construction method for the cable tunnel shaft enclosure structure. The construction method comprises the following steps: lifting, lapping and binding the upper reinforcement cage, the middle FRP reinforcement cage and the lower reinforcement cage; casting concrete to form the cable tunnel shaft enclosure structure; and cutting the cable tunnel shaft enclosure structure when a shield machine advances to the FRP reinforcement cage and a cutter head of the shield machine is replaced by a hob, a toothed cutter or a scraper. By means of the enclosure structure and the construction method, the construction progress of a cable tunnel is sped up, and the abrasion on cutters of the shield machine is reduced to a certain extent, so the enclosure structure and the construction method are suitable to be popularized in enclosure structures at the inlet and the outlet of a cable tunnel shaft for the shield machine.

Description

technical field [0001] The invention relates to an enclosure structure, in particular to an enclosure expansion structure for a shaft of a cable tunnel. [0002] The invention also relates to a shield machine cutting construction method of the shaft enclosure structure of the cable tunnel. Background technique [0003] With the continuous development and progress of urbanization in our country, the underground development of electric power, communication and other cables has become an inevitable trend. The construction of underground cable tunnels has replaced large high-voltage iron towers and corresponding overhead lines, freeing up more ground space for the urbanization process. . The vertical shaft of the cable tunnel usually adopts steel bars or steel plates as the enclosure structure of the reinforcement to achieve the purpose of water-stopping, anti-seepage, and load-bearing. The shield method must be selected for cable tunnel construction. However, in shield tunnel...

AI Technical Summary

Problems solved by technology

At present, the treatments adopted include high-pressure rotary spraying method, deep mixing method, chemical grouting method or freezing method, etc., which not only increases the construction cost of the shaft enclosure, but also prolongs the construction period; it also puts forward higher requirements for the working face of the shaft construction. requirements, the impact on surrounding traffic and buildings increases

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