Assembly type lining monitoring and measuring component embedding arrangement method

Abstract

The invention discloses an assembly type lining monitoring and measuring component embedding arrangement method. The method comprises the steps that A, when an arch prefabricated segment reinforcement cage and a side wall reinforcement cage are bound, nine monitoring points are arranged on each measuring section, one monitoring point is arranged in the middle of an arch crown, the two sides of each lining connector are each symmetrically provided with one monitoring point, one monitoring point is arranged in the middle of each side wall, and one monitoring point is arranged at the corner of each side wall; B, a gap of 15-25mm is reserved between an assembled arch prefabricated segment and a primary support, and arch back grouting and grouting of the joint of the arch prefabricated segment and the side wall are conducted immediately after one set is installed; and C, concrete on the surface of a cable concentrator is knocked off, a groove is formed along the lining inner wall from the position of a transmission cable exposed out of the arch prefabricated segment, the transmission cable is placed in the groove, and the transmission cable is sealed through mortar. Displacement and stress in a lining structure can be reasonably monitored after lining construction is completed, and safety during construction and operation is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of tunnel concrete lining construction, and in particular relates to a method for embedding and arranging assembly-type lining monitoring and measuring components, which is specially used for the assembly-type lining structure. Background technique [0002] The traditional construction technology of the second lining of the tunnel adopts full-circle steel bar binding, combined with a fully hydraulic lining trolley, and pours concrete into the vertical pouring holes on the top hole by hole to carry out the concrete pouring of the second lining of the whole ring. The mining method tunnel adopts a series of equipment modification such as controlled under-excavation, window-based mold entry, concentrated vibration, molded grouting and other equipment modification and process and construction method improvement measures. The lining quality has been greatly improved, but the lining strength and thickness of the tun...

AI Technical Summary

Problems solved by technology

However, with the continuous improvement of the secondary lining construction technology of mountain tunnels, the secondary lining is constructed with an assembled structure of prefabricated arches and cast-in-place side walls. The original embedding position and method of monitoring and measuring components are no longer applicable. Assembled lining construction is generally divided into two parts: cast-in-place and prefabricated. The construction equipment and construction technology are already different. Secondly, due to the existence of assembled joints, the stress-strain conditions of the lining reinforcement and concrete at the joints are also different from those of the traditional one-time pouring of reinforcement and concrete. Concrete stress-strain is also different, so embed point locations and methods need to be updated

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