How should the geomembrane be laid and what problems should be paid attention to in the construction process?

1. Before laying geomembrane, the corresponding qualified acceptance certificate documents of civil engineering should be obtained.

2. Before cutting the geomembrane, its relevant dimensions should be accurately measured, and then cut according to the actual size. Generally, it is not suitable to cut according to the size shown in the figure. It should be numbered one by one and recorded in detail on a special form.

3. When laying geomembrane, we should strive for less welds, and try to save raw materials on the premise of ensuring quality. At the same time, it is easy to guarantee the quality.

4. The lap width of the seam between the film and the film is generally not less than 10cm. Usually, the direction of the welding seam is parallel to the slope, that is, it is arranged along the slope direction.

5. Usually in corners and deformed areas, the length of the seam should be shortened as much as possible. Except for special requirements, on slopes with a slope greater than 1:6, within 1.5 meters from the top slope or the stress concentration area, try not to set welds.

6. During the laying of the geomembrane, artificial folds should be avoided. When the temperature is low, it should be tightened as much as possible and flattened.

7. After the geomembrane is laid, walking on the membrane surface, moving tools, etc. should be minimized. Any objects that can cause harm to the anti-seepage membrane should not be placed on the membrane or carried on the membrane to avoid damage to the membrane. cause accidental damage.

It is recommended to pay attention to the following aspects of this project:

①After the composite geomembrane is welded into a finished product, first make the lake bottom mortar protective layer.

②The bridge foundation is waterproof, adopts the steel bar through-membrane welding method, and uses a mortar protective layer to prevent the hidden quality risks caused by electric welding.

③The pasting of the composite geomembrane and the wall must prevent the appearance of large-scale hollowing.