Jiangxi EVA geomembrane Nanchang tunnel protection 650g, one cloth, one film: can be freely customized according to demand, and the price is affordable. [Important Notice] Due to the large fluctuation of raw material prices, the list price is the price of a 20cm*20cm sample. Please provide the requirements, specifications, dimensions, and parameters for customer service accounting for the actual price of conventional products. EVA geomembrane laying methods are divided into 3 types: full paving, semi-paving, and bottom paving according to the scope of EVA geomembrane. Among them, half-paved and bottom-paved types are mainly suitable for wide and shallow channels or remodeling channels with trees on canals and slopes. 1. Full paving; full shop on the slope and bottom of the canal. The laying method can be selected according to the anti-slip stability of the slope. The specific methods are: trapezoid, step, zigzag, pentagon, etc. 2. Semi-paved type; the bottom of the canal is fully paved, and the height of the EVA geomembrane of the channel slope is 1/2-1/3 of the normal water level of the channel. 3. Bottom paving type; only the bottom of the canal is paved. 4. Channel engineering construction; construction operation procedures: cleaning the base groove → EVA geomembrane laying → joint construction and inspection → connecting and anchoring with the surrounding area → acceptance → protective layer construction. 5. Clean the base groove; peel according to the design to remove all sharp debris that may damage the EVA geomembrane, such as silt, garbage, trees, grass roots, stones, etc. on the surface of the base layer within the EVA geomembrane laying range. Level and consolidate the land, repair pits, cracks, etc., and dig anchoring trenches. When there are yin and yang corners on the base, they should be rounded, and their radius should not be less than 0.5m; in areas with accumulated water and high groundwater levels, drainage should be carried out. Welding of one cloth and one film: 1. The hot welding method is a surface heating treatment of one cloth and one film connected to the surface to melt the surface, and then fuse it into one through pressure. 2. One cloth and one film are laid in a certain direction. A certain cloth, one film and one PET non-adhesive layer are reserved on both sides of one cloth and one film. When laying, adjust the direction of one cloth and one film of each unit to facilitate the welding of the two units, one cloth and one film. 3. After laying one cloth and one film, it should be pressed down with a sandbag to prevent wind. There should be no dirt, moisture, dust, etc. at the edge joints. 4. Before welding one cloth and one film, adjust the two sides, one cloth and one film at the joint so that it can be connected to a certain broadband, and is flat and without wrinkles. When welding one cloth and one film, a technician with certain experience welds, and the welding machine is used for welding. 5. Adjust the temperature and speed well. Fish pond glossy geomembrane bonding method Before bonding the fish pond glossy geomembrane, use a towel to remove dirt such as sand, dirt, etc., on the glossy geomembrane surface to ensure that the smooth geomembrane surface is clean. 1. Hot melt welding method: Before hot melt welding, the upper and lower layers of smooth geomembrane must be overlapped for 15 cm. The welding process is divided into: pressure adjustment, temperature setting, speed setting, weld lap inspection, mounting glossy geomembrane into the machine, and starting the motor. Welds are required to be neat and beautiful, and there must be no sliding welding or skipping. The temperature, speed, and pressure of welding are determined after experiments and tests. The edge of the upper smooth geomembrane at the weld should be polished to an inclination angle to improve the welding quality of the weld. When hot-melt welding, the lap width is not less than 15 cm. The thickness of the welded part shall not be less than 1.2 times the thickness of the smooth geomembrane. The edges of the pleated part, cut out the creases of the cracks to ensure a flat overlap. When squeezing the weld crack or wrinkle-excised part, the overlap should not be less than 10 cm. Cross lapping should be avoided, and T-shaped staggered welding should be used. Welds must be neat and beautiful, and must not be slipped or skipped. 2. Adhesive bonding method When constructing fish pond anti-seepage joints on a large area, it is not recommended to use the adhesive bonding method. It is only connected at the corners or with the construction concrete wall. Polyethylene waterproof board is a new type of building material, which has a wide range of uses and many advantages. However, if the construction is not carried out correctly according to its characteristics, it will not be possible to truly realize the function of polyethylene waterproof board. Therefore, construction personnel must have an in-depth understanding of the laying rules and methods of polyethylene waterproof boards, and strictly accept the construction quality. 1. The convex surface of the polyethylene waterproof board always faces the side where water flows, so that the seepage water has a way out; 2. The laying of the polyethylene waterproof board is always gradually laid from a low point to a high place; 3. Thoroughly clean the base layer laid by the polyethylene waterproof board to ensure that there are no sharp bumps on the surface of the base layer; 4. The polyethylene waterproof board boss of the back bed should be inserted into the polyethylene waterproof board boss laid first, the geotextile laid later should be pressed against the one laid first On the geotextile.