Tensile impermeable geofilm

Abstract

The invention discloses a tensile impermeable geofilm and a preparation method thereof. The geofilm comprises a first surface waterproof layer, a second surface waterproof layer, a middle waterproof layer, a first tensile moisture absorption layer and a second tensile moisture absorption layer, the first tensile moisture absorption layer is arranged on the upper surface of the middle waterproof layer; the second tensile moisture absorption layer is arranged on the lower surface of the middle waterproof layer; wherein the first surface waterproof layer is arranged on the upper surface of the first tensile moisture absorption layer, the second surface waterproof layer is arranged on the lower surface of the second tensile moisture absorption layer, the first tensile moisture absorption layerand the second tensile moisture absorption layer are non-woven fabrics respectively, and the middle waterproof layer is a flexible plastic waterproof film extending in a wavy shape. According to theanti-stretching impermeable geofilm, when the first anti-stretching moisture absorption layer and the second anti-stretching moisture absorption layer extend due to large external tensile force, stretching of the geofilm is reduced through the wavy extending structure of the middle waterproof layer, extending of the middle waterproof layer is reduced, and the impermeable effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of geomembrane, in particular to a tensile anti-seepage geomembrane. Background technique [0002] Geomembrane is based on plastic film, through its impermeability to cut off the leakage channel, it is widely used in landfill, dam seepage prevention and subway construction and other fields. [0003] The plastic film has low structural strength, poor tensile performance, and is easy to be damaged due to excessive stretching. Usually, non-woven fabrics can be used for structural reinforcement. Using the tensile strength and extensibility of non-woven fabrics, after combining with plastic films, increased Tensile strength and puncture resistance of plastic films. However, in the process of stretching the non-woven fabric, it is still easy to cause damage to the plastic film. When the non-woven fabric is stretched, it can be kept within a certain range without breaking, but the plastic film is very easy to be d...

AI Technical Summary

Problems solved by technology

However, in the process of stretching the non-woven fabric, it is still easy to cause damage to the plastic film. When the non-woven fabric is stretched, it can be kept within a certain range without breaking, but the plastic film is very easy to be damaged during the simultaneous stretching process. Leaky, and the thickness and tensile strength of non-woven fabrics are limited, and the overall anti-seepage effect still needs to be improved

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