Convenient grouting sleeve device suitable for backwall grouting and use method

Abstract

The invention relates to a convenient grouting sleeve device suitable for backwall grouting and a use method thereof. The grouting sleeve device can be divided into a front-loading grouting pipe set,a stop grouting expansion rubber sleeve and direct set, an intermediate connecting device and a grout inlet pipeline. The front-loading grouting pipe set includes an ordinary steel tube with an internal thread at one end and four small-bore grout sealing tubes welded at the periphery and provided with overhanging ports of 45-degree inclined angle on the outer wall; a four-way device of the grout inlet pipeline is a stainless steel four-way device with valves at each of end ports, and three end ports are a grout A end port, a grout B end port and a pressure relief end port; and a tube head cover is a round pipe plug device with an external thread at one end, and a grouting hole can be plugged after the tube head cover is screwed. Compared with existing devices, the convenient grouting sleeve device suitable for the backwall grouting successfully realizes the convenient handling of end sockets, the recycle of the device and the rapid restoration of the wall surface, greatly improves thework efficiency, reduces the cost expenditure, and can be widely used in backwall grouting construction.

Description

technical field [0001] The invention relates to a convenient grouting sleeve device suitable for grouting behind a wall, in particular to a convenient grouting sleeve device suitable for grouting behind a wall and a use method. Background technique [0002] Nowadays, engineering disasters such as initial branching in tunnels, leakage of secondary lining, water leakage behind subway station walls, and tunnel water leakage during operation period occur from time to time, especially with the development of urban rail transit. As an effective means of strengthening weak and broken surrounding rock and sealing groundwater, grouting behind the wall has been widely used in the water plugging work of underground engineering. The problem is as follows: [0003] 1. The effect of stopping slurry is poor, and accidents of slurry running out of the nozzle are very easy to occur. The retention rate of slurry in the effective area is low, which greatly causes waste of materials; [0004]...

AI Technical Summary

Problems solved by technology

[0003] 1. The effect of stopping slurry is poor, and accidents of slurry running out of the nozzle are very easy to occur. The retention rate of slurry in the effective area is low, which greatly causes waste of materials;

[0004] Second, when the grouting pressure is too high, it often causes the grouting pipe to collapse, and when grouting the vertical hole of the vault, the placement of the grouting pipeline is more difficult;

[0005] 3. After the grouting is completed, the protruding end needs to be cut off by a cutting machine. It is difficult to restore the wall surface in the later stage of construction, which will increase manpower and material resources, increase costs, and affect the construction period.

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