Reinforcing structure and reinforcing method for shield tunnel

Abstract

The invention relates to the technical field of shield tunnels, and discloses a reinforcing structure for a shield tunnel. The reinforcing structure comprises a tunnel body, soft partition plates are fixedly arranged on the left side and the right side of the inner wall of the tunnel body, grouting plates are fixedly arranged on the surfaces of the sides, close to the circle center of the tunnel body, of the soft partition plates, and fastening assemblies are fixedly arranged on the left and right sides of the inner wall of the tunnel body. According to the reinforcing structure and the reinforcing method for the shield tunnel, the soft partition plates and the grouting plates are sequentially arranged on the surface of the inner wall of the tunnel body and then are subjected to grouting and solidification, baffles are attached to the grouting plates, the right side of a push rod enters the inner wall of a negative pressure pipe, gas on the inner wall of the negative pressure pipe is compressed, then a guide pipe acts on a connecting rod, a bearing rotates through the ball movably connected with the inner wall of the bearing to drive a surface guide rod to move, then the guide rod drives an inner rod to move towards a magnetic plate and be attracted and fixed, and the inner rod fixed to the inner wall of the push rod can firmly fix the push rod.

Description

technical field [0001] The invention relates to the technical field of shield tunnels, in particular to a reinforcement structure and a reinforcement method for shield tunnels. [0002] technical background [0003] The shield method is a fully mechanized construction method in the underground excavation method. It is to push the shield machine in the ground, and support the surrounding rock through the shield casing and segments to prevent collapse into the tunnel. A mechanized construction method in which the soil is excavated with a cutting device in front of the excavation face, transported out of the hole by an excavation machine, pushed in by a jack at the rear, and assembled with prefabricated concrete segments to form a tunnel structure. [0004] After the excavation of the general shield tunnel is completed, there are often the following two defects: [0005] 1. Since the shield tunnel is located on the ground surface, it will be constantly squeezed. If no effective...

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Problems solved by technology

[0005] 1. Since the shield tunnel is located on the ground surface, it will be constantly squeezed. If no effective protective measures are taken, the service life of the tunnel will be accelerated, and at the same time, there may be a collapse accident. If the tunnel collapses, not only It will cause a lot of property damage, and there may be casualties;

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