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Discussion On Construction Method Of Geotextile
Jul 21, 2017

Geotextile construction method

1, filament or short wire geotextile installation usually with lap, suture and welding several methods. The width of the stitching and welding is generally 0.1 m or more, and the lap width is generally 0.2 M or more. May be exposed to long-term geotextile, it should be welded or stitched.

2, geotextile suture

All sutures must be carried out continuously (for example, spotting is not allowed). Before the overlap, the geotextile must overlap at least 150mm. The minimum stitch is at least 25 mm from the weaving edge (the edge of the material exposed). Sewn geotextile seam is the most one line and line lock chain seam method. The line used for suturing should be a resin material with a minimum tension of more than 60N and is resistant to chemical corrosion and UV resistance comparable to or exceeding the geotextile. Any "missing needle" on the sewn geotextile must be re-sewn in the affected area. It is necessary to take appropriate measures to prevent the soil, particulate matter or foreign matter from entering the geotextile after installation. Cloth lap according to the terrain and the use of functions can be divided into natural lap, seam or welding.

3, in the construction, the geomembrane above the geotextile with natural lap, geomembrane upper geotextile with sewing or hot air welding. Hot air welding is the first method of connecting the filament geotextile, that is, with the hot air gun on the two pieces of cloth instantaneous high temperature heating, so that part of the molten state, and immediately use a certain external force to make it firmly together The In the case of wet (rain and snow) weather can not be hot adhesive connection, geotextile should take another method of a suture connection method, that is, with a dedicated sewing machine for two-wire suture connection, and the use of anti-chemical UV suture. The minimum width of 10cm when suturing, the minimum width of natural lap when the 20cm, hot air welding when the minimum width of 20cm.

4, for sewing, to use the same quality and geotextile suture, suture to use anti-chemical damage and UV light more powerful material.

5, the membrane two layers of geotextile in the anchor groove with the geomembrane should be buried with the geomembrane slot.

Geotextile laying of the basic requirements

A, the seam must be intersected with the slope line; with the slope of the foot or there may be stress where the horizontal seam distance should be greater than 1.5m.

B, on the slope, the geotextile one end of the anchor, and then the slope to be laid down to ensure that geotextiles

Keep the state tight.

C, all geotextiles are to be sandbags to suppress, sand bags will be used during the laying and retained to lay the top layer of material.