Method and construction tool for removing pull rod in soil

Abstract

The invention discloses a construction tool for removing a pull rod in soil. The construction tool comprises a water supply unit and a hollow tube. The water supply unit comprises a high pressure water supply device and a high pressure pipeline connected with a water outlet of the high pressure water supply device, the water outlet end of the high pressure pipeline and the outer end part of a hollow pipe are connected, and the inner end part of the hollow pipe is used for being aligned with the surrounding soil in the pull rod in the soil. A flat water outlet is formed in the end opening of the inner end part of the hollow pipe. An arc-shaped plate of a Luoyang shovel structure is further connected to the inner end of the hollow pipe. The arc-shaped plate adopts a single-layer structure or a double-layer structure with a cavity, the end opening of the inner end port of the hollow pipe is connected with an inlet of the cavity of the double-layer structure, and an outlet of the cavity is an arc-shaped nozzle arranged along the arc of the arc-shaped plate. The invention further discloses a method for removing the pull rod in the soil. The pressure of high pressure water is used for washing away the soil around the pull rod in the soil, so that a gap is formed around the pull rod in the soil, the constraint of the surface soil on the pull rod in the soil is removed, and then the external force is adopted to pull out the pull rod in the soil. The method is simple and convenient, easy to operate, low in cost, high in efficiency and high in success rate.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a method and a construction tool for removing tie rods in the soil. Background technique [0002] In recent years, prestressed anchor rods and soil nails, as a kind of soil tie rods in the rock and soil field, have been widely used in urban construction, especially in urban foundation pit support, and these soil tie rods have not been used after construction. Remove it in time. In this way, in the subsequent construction and development process of urban underground subways, pipe gallery support piles, etc., it is often encountered that concrete metal tie rods embedded in the soil during the original construction will form obstacles, which will bring troubles to the later construction and increase costs. . [0003] In order to solve this kind of problem, there are removable bolts on the market, that is, the metal rods embedded in the soil are removed when the su...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a construction tool for removing tie rods in the soil, so that it can easily and simply solve the problem of pulling out tie rods in the soil at low cost, with low cost and high success rate, thereby overcoming the existing Insufficiency of the method

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