Underground backwater structure water-stop grouting bar

Abstract

The invention relates to an underground backwater structure water-stop grouting bar. The underground backwater structure water-stopping grouting bar comprises a water-stop grouting pipe, a grout outlet and a threaded mounting head, wherein the outer wall of the left side of the water-stop grouting pipe is connected with an expansion spring sleeve; a metal sleeve is mounted on the left side of theexpansion spring sleeve; nuts are distributed on the left side of the metal sleeve; the threaded mounting head is embedded in the right end of the water-stop grouting pipe; and a one-way check valve is fixed to the right end of the threaded mounting head; and the water-stop grouting pipe is connected to the threaded mounting head in a threaded mode. By arranging the water-stop grouting pipe, the metal sleeve and the expansion spring sleeve, the outer wall of the left side of the water-stop grouting pipe is connected with the expansion spring sleeve, the left side of the expansion spring sleeveis provided with the metal sleeve, the water-stop grouting pipe is of a cylindrical structure, when a user carries and mounts the water-stop grouting bar, the whole device is in a cylindrical shape,and when the user holds the water-stop grouting bar, the situation that sharp points of the water-stop grouting bar scratch the user is avoided.

Description

technical field [0001] The invention relates to the technical field of underground backwater structures, in particular to a water-stop grouting rod for underground backwater structures. Background technique [0002] Underground structures are divided into arched structures, circular and rectangular tubular structures, frame structures, thin shell structures, and special-shaped structures according to their structural forms. The loads borne by underground structures are divided into the following three categories according to the characteristics of the action and possible situations in use: permanent (main) loads, variable (additional) loads, and accidental (special) loads. Leakage phenomenon, usually serious leakage will be treated by facing the water. [0003] Most of the existing water-stop grouting rods are used in the use of structural external-rotating spray piles or perforating grouting methods. These methods take a long time to work, the construction effect is not ob...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a water-stop grouting rod for an underground backwater structure to solve the problem that the existing water-stop grouting rods proposed in the above background technology are mostly blocked by structural external-rotating spray piles or perforated for grouting, etc. methods, these methods take a long time to work, the construction effect is not obvious, and they are not suitable for emergency construction operations

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