What Methods should be Paid Attention to During the Construction of Geomembrane

Construction method:

Do not drag or pull the geomembrane during transportation to avoid injury from sharp objects.

1. Extend from the bottom to the high position, don't pull it too tightly, and leave a margin of 1.50% to prepare for local sinking and stretching. Taking into account the actual situation of this project, the slope shall be laid from top to bottom;

2. The longitudinal joints of two adjacent panels should not be on the same horizontal line, and should be staggered by more than 1m;

3. Longitudinal joints should be more than 1.50m away from the dam foot and bend foot, and should be located on a plane;

4. Slope first and bottom of the field;

5. When laying on a slope, the film spreading direction should be basically parallel to the line of maximum slope.

Layout:

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

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

3. When laying geomembrane, we should try to minimize the number of welds, and save raw materials as much as possible under the premise of ensuring quality. At the same time

Easy to ensure quality.

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

5. Usually in corners and deformed areas, the length of the joints should be as short as possible. Except for special requirements, on slopes with a slope greater than 1:6, within 1.5 meters from the top slope or stress concentration area, there should be no welds as far as possible.

6. When laying the geomembrane, avoid artificial wrinkles. When the temperature is low, it should be tightened and flattened as much as possible.

7. After the geomembrane is laid, it is necessary to minimize walking and moving tools on the surface of the membrane. Anything that can cause harm to the impermeable membrane should not be placed on the membrane or carried on the membrane to avoid damage to the membrane. Cause accidental damage.