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Geomembrane series
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Geomembrane series

A cloth membrane

1) the characteristics of composite geomembrane
        Geomembrane with impermeable plastic film as a substrate, and non-woven geotextile composite made of impermeable material, its performance depends on impervious impermeable plastic film performance. At present, the application of impermeable plastic film at home and abroad, mainly polyvinyl chloride (PVC) and polyethylene (PE), which is a flexible material polymer chemistry, the proportion of small, strong extension, the ability to adapt to high deformation, corrosion resistance, low temperature, frost performance. The main mechanism of the non-permeable plastic film is cut off earth leakage passage, with its greater tensile strength and elongation to withstand water pressure and adapt to dam deformation; and non-woven staple fiber is a polymer chemistry material, through needle stick or hot forming, high tensile strength and elongation, after it combined with plastic film, not only increases the tensile strength and puncture resistance of plastic film and woven surface roughness , increases the coefficient of friction of the contact surface is conducive geomembrane and stability of the protective layer. At the same time, they have good bacteria and chemical resistance to aggressive, not afraid of acid, alkali, salt erosion.
   Geomembrane of life issues, mainly by impermeable impermeable plastic film whether action may be lost, according to the Soviet national standard, hydraulic with a thickness of 0.2m plus stabilizer polyethylene film, under clear water conditions work up to 40 years to 50 years, working in conditions of sewage age 30 to 40 years. Therefore, the useful life of geomembrane sufficient to meet the useful life of the dam seepage.
2) determine the scope of Filming
         This is the first week dam core dam, but due to collapse, resulting in a disjointed heart wall portion, the upper portion impermeable to solve the problem, plus the original made impermeable sloping wall. According to this argument first week dam safety analysis, in order to solve leakage due to the weak side and the dam foundation seepage caused several landslides, taken in vertical impermeable bedrock grouting, grout contact surfaces, red well backfill curtain Wall and other impermeable impermeable high jet formation. An upper sloping wall parts made of composite geomembrane impervious blanket, the vertical cutoff wall under the convergence, from 358.0m elevation (above the check flood level 0.97m). Specific location and quantities see design.
3) geomembrane selection
       A cloth membrane, two films a cloth, two cloth one membrane, two cloth membrane and two cloth more and more film. Models 200g / m2 ~ 2000g / m2, width of 1-6 meters.
        Geomembrane with impermeable plastic film as a substrate, and non-woven geotextile composite made of impermeable material, its performance depends on impervious impermeable plastic film performance. At present, the application of impermeable plastic film at home and abroad, mainly polyvinyl chloride (PVC) and polyethylene (PE), which is a flexible material polymer chemistry, the proportion of small, strong extension, the ability to adapt to high deformation, . Corrosion resistance, low temperature, frost performance. The main mechanism of the non-permeable plastic film is cut off earth leakage passage, with its greater tensile strength and elongation to withstand water pressure and adapt to dam deformation; and non-woven staple fiber is a polymer chemistry material, through needle stick or hot forming, high tensile strength and elongation, after it combined with plastic film, not only increases the tensile strength and puncture resistance of plastic film and woven surface roughness , increases the coefficient of friction of the contact surface is conducive geomembrane and stability of the protective layer. At the same time, they have good bacteria and chemical resistance to aggressive, not afraid of acid, alkali, salt erosion.
    Geomembrane of life issues, mainly by impermeable impermeable plastic film whether action may be lost, according to the Soviet national standard, hydraulic with a thickness of 0.2m plus stabilizer polyethylene film, under clear water conditions work up to 40 years to 50 years, working in conditions of sewage age 30 to 40 years. Therefore, the useful life of geomembrane sufficient to meet the useful life of the dam seepage.
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