Construction and laying of geomembrane

Do not drag or drag the geomembrane during transportation to avoid being stabbed by sharp objects.
1. It should extend from the bottom to the high position, do not pull it too tightly, and leave a margin of 1.50% for partial sinking and stretching. Considering the actual situation of this project, the slope shall be paved from top to bottom;
2. The longitudinal joints of two adjacent panels should not be on a horizontal line, and should be staggered by more than 1m;
3. The longitudinal joint should be more than 1.50m away from the dam foot and the bend foot, and should be located on a plane;
4. First the side slope and then the bottom of the field;
5. When laying the side slope, the film spreading direction should be basically parallel to the maximum slope line.
layout
1. Before laying the geomembrane, the corresponding acceptance certificate of the civil engineering should be issued.
2. Before cutting the geomembrane, you should accurately measure its relevant size, and then cut it 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 the special form.
3. When laying the geomembrane, the welding seam should be minimized, and the raw materials should be saved as much as possible under the premise of ensuring the quality. At the same time, it is easy to ensure the quality. as shown in picture 2
4. The overlapping width of the joint between the membrane and the membrane is generally not less than 10cm, and the direction of the welding seam is usually arranged parallel to the maximum slope, that is, arranged along the slope direction.
5. Usually in corners and deformed areas, the length of the joint 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 up welds.
6. During the laying of the geomembrane, artificial wrinkles should be avoided. When the temperature is low, it should be stretched as far as possible and paved flat.