Méthodes générales d’installation de la géomembrane composite géotextile
As the key medium of the anti-seepage structure, the geomembrane layer should meet the stress requirements during installation, because the leak control effect of geomembrane is related to its strength and thickness. Therefore, choose the appropriate thickness according to the design stress.
The géomembrane composite géotextile heated with geotextile on one side or two sides has the features of high overall strength, tear resistance, anti-breaking and anti-piercing ability. The geotextile compounded on the membrane surface has supported and protected abilities.
For the leak control structure utilized with composite geomembrane, in general, the support layer and the protection layer can be simplified. For example, this geotextile composite geomembrane can be directly laid before the placement of concrete facing surface or the protective surface composed of the gravel cushion and the concrete slab. After laying this composite geomembrane, the medium coarse sand cushion can be directly laid.
The phenomenon that geotextile composite geomembrane is punctured is caused by the unenven subgrade, so it is important to prepare and maintain the civil works of subgrade.
General geotextile composite géomembrane installation method:
Tout d’abord, le traitement de la plate-forme
Subgrade should be prepared according to the design requirements, which is the key to ensuring the leak control performance. The substances including sharp stones, roots and other foreign subjects should be thoroughly removed, and subgrade is not allowed to be uneven. The prepared and maitained subgrade should be compacted by a tamper or a seesaw.
Deuxièmement, la pose
Lors de la pose de la géomembrane composite géotextile, elle doit être posée de haut en bas. Le chevauchement entre les géocomposites et entre la géomembrane et la plate-forme doit être plat et serré, mais il ne doit pas être trop serré, généralement il doit être légèrement lâche. Les bulles doivent être empêchées de se former par le bas. Parce que la géomembrane composite géotextile est relativement mince et légère, il est facile d’être soufflé par le vent avant que la couche protectrice ne soit posée. Par conséquent, la géomembrane composite géotextile ne doit pas être déployée avec une grande surface à la fois. Posez la couche protectrice du sol une fois que le géocomposite est bien posé.
Troisièmement, les
The joint has three methods of hot-melt welding, gluing and compacting, wherein the hot-melt welding has the best waterproof effect.
Shanghai Yingfan Environmental Engineering Co., Ltd.