The welding operator should observe the welding quality of the geomembrane at any time
The composite geomembrane is composed of geomembrane and geotextile. The geomembrane plays an anti-seepage function, and the geotextile protects the anti-seepage geomembrane from cracking and tearing damage of the building structure and materials, improving the mechanical properties of the composite LDPE geomembrane for sale, and realizing Reinforcement and repair functions such as anti-slip, permeation, and filtration.
When using composite geomembrane anti-seepage materials to reinforce and repair canals to prevent seepage and save water, they should be reasonably selected to meet the requirements of relevant technical indicators of national standards according to the scale of the canal project, the total cost of the project, the geological conditions of the project area, and the groundwater level. According to the accumulation of irrigation and the channel permeability coefficient, after reasonable calculation and determination of channel flow capacity, cut-off, and other parameters, a 0.3 mm thick high-density polyethylene composite textured geomembrane factory price was finally selected as the channel anti-seepage material. In order to improve the comprehensive anti-seepage and reinforcement performance of the channel, cast-in-place concrete is used to reinforce the lining after the water is cut off. The thickness of the reinforced concrete lining of the general soil channel section is carried out according to the slope of 10cm and the bottom plate of 8cm, and the special part is carried out according to the slope of 12cm and the bottom plate of 10cm.
After excavation of the canal embankment and canal bottom, carefully remove sharp-edged debris such as grassroots, tree roots, gravel, stones, and concrete particles to avoid abrasion and puncture of the geomembrane impermeable layer. After removing the debris, ram it firmly. After the channel soil compaction coefficient meets the relevant standards or design requirements and is accepted by the on-site supervision engineer, the composite geomembrane is laid.
Laying, welding, and sewing composite geomembrane are strictly prohibited on rainy days. At the same time, during the welding process, ensure that the surface of the substrate is dry, and the water content should be controlled within 15%. Wipe the film with No. 10 gauzes before welding. During the entire construction process, no fire is allowed into the construction site, and shoe spikes, high-heeled shoes, and hard-soled shoes are not allowed to step directly on the composite geomembrane. Construction vehicles, construction machinery, and other equipment are not allowed to roll the geomembrane and its protective layer.
The welding operator should observe the welding quality of the high quality LDPE geomembrane at any time, and adjust the welding temperature and walking speed reasonably according to the weather, temperature, and humidity of the construction area. Since the laying, welding, and stitching of the composite geomembrane is a concealed project, self-inspection must be carried out during the construction process and submitted to the supervision engineer for on-site acceptance. Only after the quality is qualified can the next process of construction be carried out.