Method and device for eliminating water burst,shifting sand danger of underground building curtain

Abstract

The invention provides a method for eliminating underground building curtain water burst and quick sand, and relates to an underground building construction method and a supporting device. The supporting device can be used for directly blocking defects such as underground building curtain water burst and quick sand, and has the advantages that the operation is simple, convenient and easy, no backfilling soil is required, the reliability is high, the accuracy is high, the construction time is saved and the risk is minimized. A defect part or position close to the defect of an underground building curtain, i.e. a position close to a flow eroded hole is selected on one side of the excavated part of the underground building curtain; two boreholes are drilled at the selected position; a grouting system formed by an air compressor, four grouting tanks, two grouting three-way pipes, two control throttle assemblies and two grouting pipes; nano waterproof cement slurry and water glass slurry are respectively grouted through a grouting system A and a grouting system B; the nano waterproof cement slurry and the water glass slurry are grouted from a direction opposite to the direction of water burst and quick sand, the nano waterproof cement slurry and the water glass slurry are quickly solidified after being mixed, a solidified body is piled and gathered in the defect, and finally, the defect part with water burst and quick sand is blocked.

Description

Technical field: [0001] The invention relates to an underground building construction method and associated equipment. In particular, it is a method and equipment for eliminating water gushing and quicksand dangers of curtain defects in underground buildings. Background technique: [0002] In the field of construction, the development and utilization of underground space has become popular. [0003] In areas with abundant groundwater, in order to meet the needs of construction, we must first build an underground construction curtain around the excavation pit. After the underground construction curtain is completed, excavation can be carried out, so as to clear the space of the underground project and ensure the completion of the main building. [0004] There are many types of underground building curtains, such as ground connecting wall and pile wall. Because these underground building curtains are all completed by related mechanical equipment in an invisible underground, it is ea...

AI Technical Summary

Problems solved by technology

[0006] It takes too long, time-consuming and labor-intensive to do so, and the effect is often unsatisfactory

In addition, the equipment for rotary grouting piles and "double liquid" grouting is relatively bulky and bulky, and is often unusable due to the restrictions of the surrounding environment.

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