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The function and construction method of geomembrane

  • 发表时间:11-26
  • 来源:小编
  • 联系电话:18654757623(微信同号)

  

Geomembrane is a geotextile anti-seepage material composed of plastic film as the anti-seepage substrate and non-woven fabric

composite. The anti-seepage performance of the new material geotextile mainly depends on the anti-seepage performance of the

plastic film. It is a polymer chemical flexible material with a small specific gravity, strong extensibility, high adaptability to deformation,

corrosion resistance, low temperature resistance, and good frost resistance.


Function


1. Integrating anti-seepage and drainage functions, while also possessing functions such as isolation and reinforcement.


2. High composite strength, high peel strength, and high puncture resistance.


3. Strong drainage capacity, high friction coefficient, and low linear expansion coefficient.


4. Good aging resistance, wide adaptability to environmental temperature range, and stable quality.


The function and construction method of geomembrane(图1)

  

Construction method


Do not drag or forcefully pull the geomembrane during transportation to avoid sharp objects from puncturing it.


1. It should extend from the bottom to the high position, without pulling too tightly, leaving a margin of 1.50% for local sinking and

stretching. Considering the actual situation of this project, the slope will be laid in a top-down sequence;


2. The longitudinal joints of adjacent frames should not be on the same horizontal line and should be staggered by more than 1m

from each other;


3. The longitudinal joint should be at least 1.50m away from the dam foot and bend foot, and should be set on a flat surface;


4. First, the bottom of the slope;


5. When laying the slope, the direction of the film should be basically parallel to the slope line.



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