(1) usage should take embedded method: Covering thickness should be no less than 30cm (2) renovation seepage system should include: Cushion ply, impermeable layer, transition layer, protective layer. (3) the soil should be solid, to avoid uneven subsidence, cracks, grass and tree?roots within seepage range should be cleaned. paving small diameter sand soil or clay on the contact surface as protective layer. (4) while paving, the geomembrane should not be pulled too tightly, both ends of the embedded body are in the wave shape, especially while it's anchored with the rigid material, it should leave some amount of stretching. (5) in construction, avoid stones, heavy direct hitting on the geomembrane, the best way is processing the construction while laying the film and covering protective layer.
1, clean up the slope, flat the scene, wape all sharp sundries, backfill tamping the slope, slope cutting, qualified acceptance after digging, provide working surface for composite geo-membrane pavement; 2, geomembrane split joint is for the construction convenience, and ensure the split joint quality, composite geo-membrane should take width and reduce scene split joints, before construction, we should cut within the unit and split joint into the required size according to the composite geo-membrane breadth and scene length demands, w ehsould roll it on the steel sheet, and move it to the working usrface for paving; 3, horizontally roll the film along the channel axis direction. Slope pavement, after qualified acceptance of slope, rolling it along the slope axis direction, connect it to the channal bottom composite geo-membrane in t-shape; 4, pavement should be processed in dry and warm weather, for easy to split joint, and avoid stress concentration, composite geo-membrane pavement should take the waves shape method, acceleration margin is about 1.5%, after unfolding and pull down, pull off, geomembrane and slope is required to be flat joint, without wrinkle, constructors should wear flat cloth shoes or soft galoshes, but forbid wearing spikes to avoid trampling the geomembrane, while construction, if geomembrane is found destroyed, it should be repaired timely.
Geomembrane pavement is divided into channal bottom paving and slope paving two sections. pavement method: Horizontally roll along the channel axis direction. Slope pavement, after qualified acceptance of slope, rool it along the slope axis direction, the joint with the channal bottom composite geo-membrane uses t-shape connection.
