Self-floating spatial spiral net-shaped drainage device and working method

Abstract

The invention provides a self-floating type spatial spiral net-shaped drainage device and a working method. The device comprises a main drainage belt, drainage branches, limiters, hanging holes and floating balls. The main drainage belt is a traditional flexible drainage belt; the drainage branches are of arc-shaped hard tubular structures, geotechnical cloth wraps the surfaces of the drainage branches, the drainage branches have water permeability, and water in the drainage branches can be drained through the top of the main drainage belt; the floating balls are equidistantly distributed on the drainage branches; in a dredger fill construction site, the lower end of the main drainage belt is pre-buried in a hard soil layer to be fixed, and in the rising process of dredger fill, the floating balls drive the drainage branches to rise by means of buoyancy brought by the dredger fill, so that the whole body is of a spatial spiral net structure; compared with a traditional drainage belt, the device has the advantages that transverse and vertical treatment ranges are increased, the length of a drainage path is effectively reduced, the treatment space scale of the same drainage belt is increased, and the overall treatment range and treatment efficiency of a whole drainage device system are guaranteed.

Description

technical field [0001] The invention relates to the technical field of foundation treatment and consolidation, in particular to a self-floating space spiral mesh drainage device suitable for reclamation foundation treatment and a working method. Background technique [0002] Blow fill is one of the more common artificial fills. It is mainly due to the remediation or dredging of river waterways, or the need to fill or fill up certain areas near the river due to industrial and agricultural production. High-pressure mud pumps are used to excavate dredgers The silt and sand are discharged to the areas that need to be raised and the silt accumulation area through the mud conveying pipe, and a large piece of artificial fill is formed after sedimentation and discharge. The special causes of blowing and filling have special engineering characteristics, such as unevenness, weak water permeability, poor drainage consolidation, under-consolidation, high compression, low bearing capacit...

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Problems solved by technology

[0003] The search found that Zhao Dong analyzed several commonly used foundation treatment methods in "Comparison and Selection of Subgrade Treatment Methods for Filled Soil Roads", and concluded that the use of plastic drainage boards for foundation treatment is suitable for projects with thick silt layers, but not Solve the problem of gradual clogging and drainage failure during the drainage process of plastic drainage boards; Wang Ruchong, Wang Rongpeng, and Sui Yu, in the "Blooding Test of Plastic Drainage Boards for Dredging and Filling Soil", compared the permeability coefficient of membranes before and after the membrane silting test It was found that the permeability coefficient of the vacuum filter membrane decreased significantly, and the smaller the equivalent pore size of the filter membrane, the more serious the clogging situation

[0004] Therefore, the existing technology is difficult to solve the problems of single drainage path, small treatment range, easy blockage and drainage failure in traditional drainage belts

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