Foundation pit waterproof curtain achieving secondary melting mending through seepage dipping poly condensation bonding bodies and construction method

Abstract

The invention relates to a foundation pit waterproof curtain achieving secondary melting mending through seepage dipping poly condensation bonding bodies and a construction method, and belongs to the technical field of civil engineering underground water anti-seepage structural design. The waterproof curtain comprises a plurality of reinforced concrete supporting piles and a plurality of primary curtain piles, and the reinforced concrete supporting piles and the primary curtain piles are arranged on the inner side wall of a foundation pit, and adjacent reinforced concrete supporting piles are in lap joint to form a whole single-row sealed waterproof curtain through the primary curtain piles. The foundation pit waterproof curtain further comprises secondary curtain piles and the seepage dipping poly condensation bonding bodies which are connected with the secondary curtain piles to form a whole, wherein the secondary curtain piles are built at a branching position of the waterproof curtain under the underground water level and formed by high-pressure jet grouting cement paste. The bonding bodies are filled at the branching positions between the primary curtain piles under the underground water level and the reinforced concrete supporting piles or the branching positions between each two adjacent primary curtain piles, and connect the primary curtain piles and the reinforced concrete supporting piles into a whole in a bonding mode or connect the two primary curtain piles into a whole through seepage, dipping and poly condensation in the bonding mode. The foundation pit waterproof curtain effectively achieves a waterproof function, and is needless of changing construction environments, easy to operate, low in project cost, and strong in practicability.

Description

technical field [0001] The invention belongs to the technical field of civil engineering groundwater anti-seepage structure design, and particularly relates to a civil engineering underground ultra-deep large foundation pit enclosure structure side wall waterproof curtain structure for underground mineral resources development, underground space resource development, buildings and other underground anti-seepage. Background technique [0002] With the continuous increase of high-rise buildings, it is not uncommon to use well point precipitation in the construction of old urban areas, causing cracks and sinking of adjacent buildings, pipelines, and road surfaces. In order to protect groundwater resources, reduce waste, and prevent groundwater level drop outside the foundation pit from inducing related geological disasters, it will cause various hazards to surrounding built buildings, pipelines, and road surfaces. The water-stop curtain is the primary measure for dewatering in ...

AI Technical Summary

Problems solved by technology

[0009] Therefore, today, water-stop curtains often cannot play the role of complete water-proof, and it is still a technical problem that has not yet been well solved to construct an effective water-stop curtain or repair an invalid water-stop curtain to make it stop water.

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