Leaking stoppage method for foundation pit

Abstract

The invention discloses a leaking stoppage method for a foundation pit, which can avoid shortcomings of a leaking stoppage method for a foundation pit in the prior art, is simple in step, few in consumption and fine in leaking stoppage effect, and can fast complete leaking stoppage. The leaking stoppage method includes following steps: 1) determining the position of a leaking region between a water-stopping curtain and a supporting pile; 2) downwards drilling at least one hole to the leaking region from the construction ground over the leaking region; 3) feeding filling sacs into the leaking region via the drilled holes; and 4) filling fillers into the filling sacs and leading the filling sacs to be expanded in the leaking region until leaking stoppage is finished. The leaking stoppage method for the foundation pit can fast stop leaking in the leaking region within a short time, saves operation time, and reduces waste of a work period. An operation environment is simple, and operation needs to be performed on the construction ground only and is convenient; and fewer devices are used, consumption of leaking stoppage materials is low, leaking stoppage is finished at one step fundamentally, and a leaking stoppage effect is good.

Description

technical field [0001] The invention relates to a method for waterproofing and anti-seepage in the construction field, in particular to a method for plugging leakage of foundation pits. Background technique [0002] Foundation pits located below the groundwater table need to take measures to drain groundwater during construction. When the aquifer is rich in water and difficult to drain, or precipitation may cause damage such as deformation of surrounding buildings, a curtain water-stop solution is often used. As a waterproof facility for underground foundation pits, the water-stop curtain is the general term for the water-stop series around the main body of the project. For some not very deep foundation pits, its foundation pit enclosure is divided into three parts. One part is the retaining pile, which mainly acts as a retaining wall. The form may be a reinforced concrete pile or other forms of piles. There is a certain gap between the piles, but they can retain the soil. ...

AI Technical Summary

Problems solved by technology

The limitations of this method are: the brick wall cannot be firmly engaged with the support piles, and the bottom of the brick wall is still soft powder sand, and when the water pressure outside the foundation pit increases, the brick wall will be pushed down; , water leakage dilutes the cement between the brick joints, and it is difficult to truly seal it; the speed of building brick walls is relatively slow, and brick walls are often pushed down by quicksand before they are fully built.

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