Sealing device for vertical pipe jacking construction of pipe gallery

Abstract

The invention discloses a sealing device for vertical pipe jacking construction of a pipe gallery, which belongs to the field of shield tunnel construction of a pipe gallery. The device includes: a bracket, a plurality of drive components, a plurality of support plates, a grouting component, and a controller; the middle part of the bracket is vertically provided with a cylindrical cavity for the pipe jacking machine to pass through, and the bracket and the inner wall of the fixed steel pipe sheet can be The connection is disassembled, and an installation cavity is formed between the bracket and the inner wall of the fixed steel pipe sheet; multiple gaps are provided on the side wall of the bracket; multiple drive components correspond to multiple support plates one by one, and are all arranged in the installation cavity. The drive assembly is used to drive the first end of the support plate to pass through or penetrate the gap; the controller is used to control whether multiple drive assemblies work; the grout injection assembly is used to inject cement slurry or polyurethane material into the cylindrical cavity above the support plate. The sealing device can not only prevent water gushing, sand gushing, etc., and play a sealing role, but also effectively prevent soil collapse, reduce construction risks, and can meet the requirements of vertical pipe jacking construction.

Description

Technical field [0001] The present invention relates to the field of sprinkle tunnel construction, and in particular, to a sealing device for pipe gallery. Background technique [0002] The gallery refers to the tunnel space for setting up electric power, communication, gas, heating, drainage lines. In the urban integrated gallery shield tunnel, ventilation and escape ports generally use vertical top tube construction. Among them, the vertical top pipe construction refers to: using the top pipe to open the soil of the target position up, while excavating and transporting the soil out of the ground until the formation is tenthole. However, due to the influence of water, land self weight, easily formed Sudden Water, sand production, Chung, and even cause collapse, affect the vertical pipe jacking. During the vertical top pipe construction process, problems such as spring, spring, and even collapse can be avoided by sealing the soil of the hole. Based on the above, it is necessary t...

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Problems solved by technology

[0005] The ring-shaped rubber sealing sheet in the sealing device provided by the related technology bears the load difference of water and the self-weight of the land. During the vertical pipe jacking construction, the sealing effect is poor, and the collapse inevitably occurs, which affects the vertical pipe jacking construction operation.

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