Geomembrane is a geotextile anti-seepage material composed of plastic film as the anti-seepage substrate and non-woven fabric composite. The anti-seepage performance of the new material geotextile mainly depends on the anti-seepage performance of the plastic film. Geomembrane is a waterproof and barrier material based on high molecular weight polymers.

Construction method:

Do not drag or forcefully pull the geomembrane during transportation to avoid sharp objects from puncturing it.

1. It should extend from the bottom to the high position, without pulling too tightly, leaving a margin of 1.50 for local sinking and stretching. Considering the actual situation of this project, the slope will be laid in a top-down sequence;

2. The longitudinal joints of adjacent frames should not be on the same horizontal line and should be staggered by more than 1m from each other;

3. The longitudinal joint should be at least 1.50m away from the dam foot and bend foot, and should be set on a flat surface;

4. First, the bottom of the slope;

5. When laying the slope, the direction of the film should be basically parallel to the larger slope line.