Do you need to suture the lower geotextile of composite geomembrane?
Look at construction requirements
Need to suture, but the operation is more trouble.
Generally do not need to suture, the need for geomembrane welding. The above geotextiles need to be stitched
Under normal circumstances without suture (stretch, overlap to a piece like), just the geomembrane welding, the top layer of geotextile with a hand sewing machine sewing can be geotextile as a protective layer of geomembrane, to protect the impermeable layer In order to reduce the UV radiation, increase the anti-aging performance, it is best to use the laying method of laying.In the construction, the first use of smaller diameter sand or clay to find the base surface, and then laying, Too tight, buried at both ends of the soil part of the corrugated, and finally in the shop on the two cloth a film with fine sand or clay shop layer of 10cm over the layer. Puzzle 20-30cm stone (or concrete prefabricated block) For the protection of the layer.When the construction, should try to avoid the stone directly hit on the best side of the film side of the protective layer of the construction of the two cloth a film and the surrounding structure should be connected with expansion bolts and steel plate pressure bar anchor, The connection part to brush the emulsion asphalt (2mm thick) bonding, to prevent the occurrence of leakage. Construction joint processing is a key process, a direct impact on seepage effect. General seam way: ① lap: lap width Should be greater than 15cm; ② heat welding: suitable for slightly thick geomembrane substrate, weld lap width of not less than 5C M
