Grouting air cushion plug

Abstract

A grouting air cushion plug comprises a grouting pump, a slurry conveying pipe, a guniting head, an air cushion sealing plug body, an air compressor and the like, wherein the air cushion sealing plug body is placed on the periphery of the pipe wall of the joint between the guniting head and the slurry conveying pipe, and the air cushion sealing plug body is connected with the air compressor through an air pipe. Because the air cushion sealing plug body is additionally added between the a grouting pipe and a hole wall, slurry can be prevented from overflowing, and the grouting air cushion plug is used for preventing the phenomenon of slurry overflowing caused by the fact that because a gap exists between the grouting pipe and the hole wall, pressure decreases. After the grouting pipe stretches underground, the air cushion sealing plug body is inflated by the air compressor to seal the gap, the inflated air cushion sealing plug body blocks off the gap so that back pressure can be formed, and the slurry is forced to evenly permeate to the periphery of a bottom layer. After grouting is completed, the air cushion sealing plug body is deflated and made to ascend by 0.5 meter together with the guniting head, grouting is carried out after the air cushion sealing plug body is inflated again, operation is carried out repeatedly and so forth till the slurry reaches a hole opening, the whole grouting process is segmented, and reinforcement is uniform. The size of the air cushion plug needs to be decided according to the size of the gap between the grouting pipe and the hole wall. Therefore, grouting quality can be guaranteed.

Description

Technical field [0001] The invention relates to a construction machine, in particular to a grouting air-cushion plug in which an air-cushion sealing plug is added between the grout delivery pipe and the cave wall in order to prevent the grout from coming out when the grout is poured underground. Background technique [0002] On the construction site, grout is often poured underground, but in the construction of foundation reinforcement grouting, it needs to be injected deep into the ground. Because there is a gap between the grouting pipe and the wall of the cave, the pressure is reduced, causing the grout to flow out of the cave, which will affect the grouting. Firstly, the cement slurry can penetrate evenly around the bottom layer, especially in the construction of hard soil layer, a large amount of slurry will be generated at the hole, and the effect is very poor. Workers are also troubled by this kind of thing, because it will affect the quality of the foundation in seve...

AI Technical Summary

Problems solved by technology

[0002] On the construction site, grout is often poured underground, but in the construction of foundation reinforcement grouting, it needs to be injected deep into the ground. Because there is a gap between the grouting pipe and the wall of the cave, the pressure is reduced, causing the grout to leak out at the entrance of the cave, which will affect the spraying of the grout. The effect of evenly permeating the cement slurry to the surroundings of the bottom layer, especially in the construction of the hard soil layer, will produce a large amount of slurry at the hole, and the effect is very poor

Workers are also troubled by this kind of thing, because it will affect the quality of the foundation in severe cases, causing serious consequences

Images