Leakage-plugging method for water-stopping curtain

Abstract

The invention discloses a leakage-plugging method for a water-stopping curtain, which is good in effect, simple in steps and less in consumption and can rapidly accomplish leakage plugging. The method comprises the two processes of leaking point exploration and leakage management, wherein in the process of leaking point exploration, a plurality of exploration holes are drilled in a water-leakage zone in a foundation pit, the position of a leakage zone is determined according to the loose degrees of rock core structures in the exploration holes, and the loose positions in the rock core structures are the positions of the leakage zone; the process of leakage management comprises the following steps of: (1) downwards drilling at least one hole to the leakage zone from construction ground above the leakage zone between the water-stopping curtain and a supporting pile; (2) placing plastic pipelines in the drilling holes; (3) sliding plastic bags to the bottom of the pipeline along the inner wall of the plastic pipeline, wherein leakage-plugging materials are enclosed in the plastic bags; and (4) breaking the plastic bags at the bottom of the plastic pipeline. With the adoption of the leakage-plugging method for the water-stopping curtain, the leakage-stopping materials are directly thrown in the leakage zone, so that leakage plugging is fundamentally accomplished in one step, and the leakage-plugging 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 a water-stop curtain. 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. [0003] 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 ret...

AI Technical Summary

Problems solved by technology

The leakage plugging method of the water-stop curtain in the prior art consumes a lot, and the plugging effect is not good. When the plugging treatment is performed inside the foundation pit, if the amount of water entering is large and the flow rate is fast, the plugging materials put in will be washed away instantly. A large amount of cement is needed to add plugging; when plugging outside the foundation pit, the complex building structure will increase the difficulty of plugging, and the mixture of cement and water glass as waterproof material cannot adapt to the differences in different underground geological conditions , unable to overcome the corrosiveness of different gases and groundwater, so the plugging effect cannot be guaranteed for a long time, and secondary leakage is prone to occur

Images