Geotextile laying process requirements

1. Basic level inspection: check whether the basic level is smooth and firm. If there is any foreign body, it should be handled properly.

2. the test according to the situation, determine the worker 'す, try to shop after cutting, cutting dimension should be accurate.

3. Check whether the width of Sarah is appropriate, and the lap should be smooth and loose.

4. Positioning: Use a hot air gun to connect the overlapped dry places of two geotextiles, and the distance between the sticky dry contacts should be straight.

5. When stitching the lap joint, the suture line should be straight and the stitches should be even.

6. After stitching, check whether the cloth is laid smoothly and whether there are defects.

7. If there is any unqualified phenomenon, it shall be repaired in time.

Self-test and repair:

A. All geotextile sheets and seams must be checked.

Defective geotextile sheets and sutures must be clearly marked on the geotextile and repaired

B. A lost geotechnical paper must be repaired with a patch with a geotechnical sheet that is 200mm less in each direction than the edge of a defect.

The thermal connection must be strictly controlled to ensure that the patch and the geotextile are tightly bonded and no damage is done to the geotextile

C. At the end of each laying day, visual inspection shall be carried out on all geotextile surfaces laid that day to ensure that all damaged areas have been marked and repaired immediately to ensure that the laid surfaces are free of foreign material that may cause damage, such as fine needles, nails, etc

D. The following technical requirements shall be met when geotextile is damaged and repaired

E. The patch material used to fill holes or seams shall be the same as geotextile.

F. The patch shall extend at least 30 cm beyond the damaged cloth.

G. At the bottom of the landfill, if the gap in the fabric exceeds 10% of the width of the rolling material, the damaged parts shall be removed and the two geotechnical works shall be removed

Cloth connection;

If the gap exceeds 10% of the width of the roll on the slope, the roll of geotextiles shall be removed and replaced with a new roll.

H. The working shoes worn by the construction personnel and the construction machines and tools used shall not damage the geotextile, and the construction personnel shall not do anything that may harm the geotextile on the geotextile that has been supplemented, such as smoking or poking the geotextile with sharp tools.

I. For the safety of textile materials, the packaging film should be opened before laying geotextile, with one roll spread and one roll opened.

And check the appearance

The quality of

J. In particular, it is pointed out that the geotextile should be checked and accepted in time after arriving at the site

To strictly implement the company's geotextile Construction and Acceptance Regulations

Notes for geotextile installation and Construction:

1. Geotextile can only be cut with geotextile knife (hook knife). In case of cutting in the field, special protection shall be taken for other materials

Measures to prevent unnecessary damage to geotextiles by cutting them;

2. While laying the cloth, all necessary measures must be taken to prevent damage to the following layer of material;

3. When laying geotextile, care must be taken not to allow rocks, large amounts of dust or moisture, or other substances that may damage the geotextile, may obstruct the discharge of fruit or the filter, or may cause difficulties for subsequent connections, to enter under the geotextile or the geotextile

4. After installation, all geotextile surfaces shall be visually inspected to determine all damaged landowners, marked and repaired.

Make sure there are no foreign material such as a broken needle on the laid surface that can cause damage

5. The connection of geotextile must follow the following rules: under normal circumstances, there should be no horizontal connection on the slope surface (the connection should be along the slope surface)

The wheel does not intersect with it), except where repaired.

6. If the bonding wire is used, the bonding wire shall be made of the same or more than the geotextile material, and the bonding wire shall be anti-chemical UV

Material.

The sutures and the cloth should be clearly different in color so as to facilitate inspection.

7. Pay special attention to the stitching during installation to ensure that no soil or gravel gets into the middle of the geotextile

Damage and repair of geotextiles

1. At the suture junction, re-suture shall be performed and make sure that the end of the jumping needle has been re-stitched

2. In all areas except rock slopes, holes or torn parts must be patched and sewn with geotextile patches of the same material.

3. At the bottom of the landfill, if the length of the tear exceeds 10% of the width of the roll, the damaged portion shall be cut off and the two sections of geotextile shall be joined together.