Detailed introduction to the construction standards for anti-seepage membranes in artificial lakes and reservoirs

There are very high technical requirements and standards for the construction of artificial lake reservoir anti-seepage membranes, which is inseparable from the fact that its replacement and maintenance are very complex and costly in the future. Today, we will focus on introducing the detailed construction norms of artificial lake anti-seepage membranes for everyone.

The anti-seepage membrane at the bottom of an artificial lake or reservoir can be laid after the excavation of the reservoir area and the filling of the dam body. Before laying the geomembrane, a vibratory roller should be used to compact the bottom of the reservoir. After reaching the dry bulk density required by the design, the base surface should be leveled manually, and sharp edges, hard lumps and other debris on the base surface should be removed to ensure that there are no steep slopes, misalignment, water accumulation or loose soil on the surface, achieving a smooth surface and guaranteeing the anti-seepage effect.

The geomembrane is made of two 0.4mm pieces of fabric and one layer of membrane. After the film-laying foundation is inspected and accepted as qualified by the engineer, the construction is carried out in the order of the width of the geotextile and the cross-section of the width, combined with the laying of the crushed stone protective layer, and is extended along with the laying of the crushed stone protective layer. The upstream width should offset the downstream width. The laying should be flat and tight, and an appropriate remaining width should be considered, but no wrinkles should be formed to ensure the tight combination of the anti-seepage geotextile and the bottom of the reservoir. Before laying the film, try to cover a small area as much as possible. Large-scale construction shall be carried out after approval by the engineer based on the qualified parameters, construction combination, process, working mode and technical indicators of the test laying. To prevent displacement and overlapping misalignment of the anti-seepage geotextile after laying, it should be anchored at adjacent parts or appropriate positions. When laying geomembrane, avoid damage and contamination. After laying, do not expose to the sun for a long time. Lay the crushed stone protective layer in time. When conducting construction at low temperatures (below 0℃), the geomembrane should be in a soft state and not freeze.

The above is a detailed introduction to the construction standards of artificial lake anti-seepage membranes. We hope it will be of some help to you when building reservoirs and artificial lakes in the future. Changhong specializes in the production of artificial lake and reservoir anti-seepage membranes. If you have any product needs, please feel free to contact us at any time.