Mortar leakage repair method for damage of hinged seal structure based on shield machine

Abstract

The invention discloses a mortar leakage repair method for damage of a hinged seal structure based on a shield machine, and the mortar leakage repair method comprises the following steps: step 1, forming an isolation layer; step 2, mounting a packing; step 3, mounting a shield tail prolonged steel plate; step 4, mounting a seal strip; step 5, mounting a spacing assembly; and step 6, filling grease. The mortar leakage repair method disclosed by the invention has simple steps, the hinged seal structure of the shield machine is sealed through a first supplementary seal ring, a second supplementary seal ring and a grease seal layer, so the airtightness is better as compared with the existing blocking mode by using packings, cotton yarns and other materials, and simultaneously, compared with the existing mode of dismantling a thrust oil cylinder and other components in the shield machine for replacing the hinged seal structure, the mortar leakage repair method has convenient operation, small risk in construction, low cost and short construction cycle.

Description

technical field [0001] The invention belongs to the technical field of shield machine construction, and in particular relates to a slurry leakage repair method based on the damaged hinged sealing structure of the shield machine. Background technique [0002] Shield tunnel boring machine, also known as shield machine, is a kind of special construction machinery equipment for tunnel boring. With the continuous deepening of urban construction, rail transit, highway, water conservancy construction and other projects will have a substantial increase, more and more More and more engineering construction units prefer shield machines for construction. The shield machine is mainly composed of nine parts, namely cutterhead, shield machine, cutterhead drive, double-chamber airlock, segment assembly machine, soil dumping mechanism, post-supporting device, electrical system and auxiliary equipment. Among them, the shield machine mainly includes three parts: the front shield, the middle ...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 As shown, the existing shield machine hinge sealing structure includes a first sealing ring 3 and a second sealing ring 4 arranged side by side at the hinge of the middle shield 1 and the tail shield 2, and the first sealing ring 3 and the second sealing ring 4 prevent External soil residue or muddy water enters the inside of the shield machine along the hinge of the middle shield 1 and the tail shield 2, but in actual construction, since the first sealing ring 3 and the second sealing ring 4 must bear a certain pressure during work , easy to be worn, causing muddy water to pass through the damaged first sealing ring 3 and second sealing ring 4 into the inside of the shield machine, resulting in slurry leakage, which can hinder normal construction and cause safety hazards

[0004] There are two repair methods for the damage of the hinged sealing structure of the existing shield machine. The first method uses packing, cotton yarn and other materials to block the hinge of the middle shield 1 and the tail shield 2. It has certain limitations, because the muddy water shield machine is surrounded by muddy water, and the blockage method cannot effectively resist the muddy water; the second method retreats the shield tail 2, removes the propulsion cylinder and other components in the shield machine, and then replaces the first The sealing ring 3 and the second sealing ring 4, although the repair method of replacing the first sealing ring 3 and the second sealing ring 4 is effective, but the operation is difficult, the risk is high, the cost is high, and the construction period is long, so it is generally not suitable The actual situation of the shield machine construction site, the feasibility is low

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