Grout sealing device of advance strengthening and grout sealing device and advance strengthening and grout sealing device

Abstract

The invention discloses a grout sealing device of an advance strengthening and grout sealing device and an advance strengthening and grout sealing device. The grout sealing device comprises a grout sealing cylinder, an annular pressure plate, skew shafts and a rotating mechanism, wherein the outer edge of the annular pressure plate is matched with the inner wall of the grout sealing cylinder, andthe inner edge can be matched with the periphery of a drill stem, thereby realizing the seal between the grout sealing cylinder and the drill stem through the matching relations and preventing grout from flowing back; the annular pressure plate comprises a plurality of divisional pressure plates, and the divisional pressure plates are respectively fixed on the skew shafts; the rotating mechanism capable of driving the skew shafts to rotate is arranged outside the grout sealing cylinder; and the overturn of the annular pressure plate is realized through the rotating mechanism. The grout sealingdevice has the technical effects of simple structure and low operation cost. In the overflow device of the advance strengthening and grout sealing device, the matching surface of the grout stopping plate and the grout stopping port is a rotatable curved surface; and when the grout stopping port is opened or closed, the rotation amplitude of the grout stopping plate can be reduced, and the operation space can be reduced. The grout sealing device and the advance strengthening and grout sealing device are suitable for advance strengthening the operation surfaces.

Description

technical field [0001] The invention relates to a cement reinforcement and sealing device, in particular to a cement sealing device for advance reinforcement and sealing device, and also relates to an advance reinforcement and sealing device. Background technique [0002] In tunnel operation, in order to avoid surrounding rock breakage, water gushing, partial pressure, shallow burial, roof fall, and slope collapse at the tunnel working surface, it is necessary to reinforce the tunnel working surface; Pre-reinforcement of the tunnel with protective measures. [0003] Tunnel advanced support pre-injects cement slurry into the accumulation body at the tunnel entrance to consolidate the surrounding rock of the tunnel working face before excavation, so as to achieve the purpose of advancing the reinforcement of the working face, and then excavate the tunnel after reinforcement . [0004] The advanced support of the tunnel is carried out through the advanced reinforcement and se...

AI Technical Summary

Problems solved by technology

The complex shape of the rubber tube 32 increases its processing difficulty, and also increases the difficulty and progress of the sealer 3 installation, which increases the manufacturing and installation costs; when the rubber tube 32 is removed, the pressure ring 32-1 and the rubber tube protrude The cooperation will often destroy the elasticity of the rubber tube 32, causing the rubber tube 32 to break, making it difficult to disassemble.

In addition, in order to realize the sealing of the sealer 3, a separate high-pressure water source is required, which also increases the operating cost of the device

[0008] Second, the stopper plate 24-1 of the overflow device 2 realizes cooperation with the stopper opening of the inner cylinder 23 by turning over. Since the stopper plate 24-1 and the stopper opening are in a right-angle fit relationship, the movement range is large when turning over , requires a large operating space; in addition, such a cooperative relationship tends to cause the slurry to stay in the right-angle space, and the slurry stop is easily blocked by the slurry, which cannot normally seal the slurry stop of the inner cylinder 23, and is also not conducive to Cleaning of the inner cylinder 23 and the pulp stopper 24-1

[0009] Third, the tunnel surface pipe 1, overflow device 2 and sealer 3 need to be disassembled frequently, but in the prior art, they are connected by bolts; during assembly, the bolt holes on the corresponding flanges It is difficult to align; after alignment, the entire bolt must be rotated to achieve fixation; when dismounting, the entire bolt needs to be unscrewed, which takes a long time to disassemble, and the efficiency of installation and disassembly is relatively low

[0010] Fourth, the centerline of the overflow pipe 22 intersects the centerline of the outer cylinder 20 of the overflow device 2, so that the cross-sectional area formed by the overflow pipe 22 and the outer cylinder 20 is small, and the area of ​​the overflow port is small, which easily leads to the overflow of the overflow pipe 22. block

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