A kind of station foundation pit pressure relief well auxiliary well sealing device

Abstract

The utility model relates to the technical field of subway station foundation pit engineering construction, concretely relates to a kind of station foundation pit inside pressure-relief well auxiliary well sealing device, wherein, including solid wall well pipe, grouting steel pipe, grouting head, sealing steel sheet, grouting mouth, overflow mouth, grouting equipment, grouting pipe, bolt and flange, to the problem that slurry is not dense, and later leakage due to the influence of pressure water for the existing pressure-relief well well sealing mode, the device eliminates the influence of pressure water by connecting high existing reserved precipitation well pipe, and using the mode of grouting from lower part to upper part to ensure grouting dense, with the advantages of simple production, simple operation, reusable, reliable well sealing quality, etc., can effectively avoid pressure-relief well later repeated leakage, protect normal use of station, reduce later maintenance cost.

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