Geomembrane Laying Should Be Selected Between 5 And 35 °C

Geomembrane technology is applied to channel engineering and has important functions such as frost heaving oxidation, water immersion, weathering and corrosion. The original soil section is lined with geomembrane concrete, and the severely damaged section of the lining is inverted and lining to reconstruct or reinforce the building that affects normal operation.

First, pay attention to the weather forecast. The geotextile film should be laid as far as possible at a suitable temperature between 5 and 35 °C. During the laying period, once it rains, the construction should be stopped immediately. After the rain stops, the construction should first wipe the rainwater from the joints, and then carry out subsequent laying and splicing construction.

Secondly, in the laying process, in order to facilitate the splicing and prevent stress concentration, the geotextile is laid by wave dispersion, and the remaining is about 1.5%. After the geotextile is unfolded, it is leveled in time to ensure that the geomembrane is consistent with the slope surface, and there is no bulging or wrinkling.

Third, the construction site should pay attention to fire prevention and anti-theft, often check the electrical circuit, fire or smoking is strictly prohibited, so as to avoid the fire damage affecting the construction progress.

At present, geomembrane thermal fusion welding technology has been developed, and dual-track automatic welding has been widely used. However, due to the influence of the construction environment, overheating and low heat welding sometimes occur. The former will cause the physical and mechanical properties of the weld to be significantly lower than the geomembrane substrate, while the latter will cause water and air leakage due to loose welding. What's more, the entire anti-seepage has a large number of fission splicing, double-track automatic welding at many points and "叮" fission" "ten-byte nodes are difficult to meet the quality requirements. For this kind of defect, the hand-held fan manual is usually used to strengthen the heat and easily lead to welding. The seam is melted through low, high, and becomes unaffected by system vulnerabilities that are difficult to assess.

Geomembrane has gradually exposed many problems while being widely used. Under the process of thermonuclear fusion process and environment, thermal burn is very common in the process of geomembrane thermal fusion, especially the structure of two cloths and a film, which makes it difficult to effectively find the key in the prevention of impervious geomembrane defects. Roles, and impurities participate in the thermonuclear fusion process and form plaques.

According to the actual investigation, the geomembrane manufacturer found in the material testing that the geomembrane fiber and the geomembrane are generally in the process of hot melt, and the geomembrane fiber generally enters the geomembrane with a diameter larger than 0.1 mm. Two cloth-film structure, due to the need for hot melt on both sides of the film body, the effective thickness of the geomembrane will lose more than 0.2mm. A roll of 6m wide and 60m long geomembrane allows for a perforated repair point with 10 impurities and dead blocks per 180 square meters of geomembrane. The impervious area of the reservoir is 5.04 million square meters, that is, 28,000 perforation repair points, and 280,000 impurities and blockages.