The selection of geomembrane
should be comprehensively considered in terms of engineering application, economy, construction technology characteristics and material performance. First consider whether the permeability and quality meet the requirements. Secondly, in order to prevent damages encountered during transportation and construction, geomembrane must have good mechanical properties such as anti-permeation, anti-puncture, and tensile strength. Of course, during construction, we must also take care to protect it from damage. In addition to the above points, durability and thickness should also be considered.
Currently, anti-seepage geomembrane generally has three standards: GB/T 17643-2011 GH-1, GB/T 17643-2011 GH-2 and the urban construction standard CJ/T234-2006 produced with new materials. Many geomembrane manufacturers are very concerned.
How to choose the thickness of geomembrane in anti-seepage project? Of course, the thicker the geomembrane, the better, but at the same time the cost increases and becomes thinner. The cost will drop, but it will not meet the needs of the project. Therefore, choosing a suitable thickness of geomembrane can not only meet the needs of the project, but also achieve the purpose of cutting costs. Please choose the thickness carefully and customize it according to the engineering requirements of the geomembrane. The thickness of the geomembrane is generally above 0.5 mm, and it must be appropriately thickened for important projects with high requirements. During the actual operation of the project, it is necessary to entrust the relevant testing center to test materials to prove whether the quality of the geomembrane produced by the manufacturer is reliable, and to provide a basis for selecting safe, reliable and economical materials. The application environment of geomembrane has been buried in the ground for many years, so it is required to have good anti-aging and anti-decomposition ability, and can effectively resist the puncture of plant roots. For geomembrane working in complex water environment, it must also have good alkalinity. According to the above description, please master the selection method of geomembrane thickness, and pay attention to avoid uncivilized construction in construction. When used in a complex environment, you can choose a composite geomembrane with geotextiles on both sides to prevent sharp objects from breaking or damaging the film material.
There are many types of geomembranes. Only by choosing a suitable geomembrane can we achieve better anti-seepage effect, increase the life of the geomembrane, and reduce the construction and maintenance costs of water conservancy projects.