Geomembrane anchorage is divided into horizontal anchorage and vertical anchorage. An anchorage trench is excavated inside the horizontal horse road, and the trench bottom width is 1.0 m, Groove depth 1.0 m, Cast-in-place concrete or backfill anchorage after laying geomembrane, cross-section 1.0 mx1.0m， The depth is 1 m.
Geomembrane slope fixing technical requirements mainly include the following aspects ：
- Laying sequence and method ：
- The geomembrane shall be manually laid in sections and blocks according to the sequence of first upstream and then downstream, first slope and then groove bottom .
- When laying, the geomembrane should be properly relaxed, reserving 3% ~5%The surplus is made into a wave-shaped relaxation mode of the protrusion to adapt to the change of temperature and the subsidence of the foundation, and avoid artificial hard folding damage .
- When laying composite geomembrane on slope surface, the arrangement direction of joints should be parallel or vertical to the large slope line, and should be laid in the order from top to bottom .
- Fixation method ：
- Anchor groove fixation ：In the construction site, trench anchorage is generally used. According to the use conditions and stress conditions of the anti-seepage geomembrane, the anchoring trench with appropriate width and depth is dig, and the width is generally 0.5 m-1.0m， Depth is 0.5 m-1m。 The anti-seepage geomembrane is laid in the anchoring ditch and the backfill soil is compacted, and the fixing effect is better .
- Construction precautions ：
- Before laying geomembrane, clean the foundation surface to ensure that the foundation surface is clean and free of sharp substances, and level the slope surface of reservoir dam according to the design requirements .
- Geomembrane connection methods mainly include thermal welding method and bonding method. Thermal welding method is suitable for PE Composite geomembrane, bonding method is commonly used in plastic film and composite soft felt or RmPVC Connection of .
- In the process of laying geomembrane, upper cushion layer and protective layer backfilling, all kinds of sharp objects should be avoided to contact or impact the geomembrane to protect the geomembrane from being punctured 。
Through the above technical requirements and construction methods, the geomembrane slope can be effectively fixed to ensure its stability and anti-seepage effect during use.
Post time: Dec-17-2024