The geomembrane is used as a filter layer, and its main function is the filtration effect, but the corresponding function also has isolation and reinforcement. Therefore, it is superior to sand and gravel as a filter layer. Brass Soap Dish,Soap Basket Holder,Brass Soap Holder,Brass Soap Dish Wall Mount Heshan Zhongxin Sanitary Ware Ind., Co., Ltd , https://www.baolongfaucets.com
The geomembrane is used as a filter layer, and its main function is the filtration effect, but the corresponding function also has isolation and reinforcement. Therefore, it is superior to sand and gravel as a filter layer. The geomembrane has a larger brother's gap, especially the needle-punched nonwoven fabric has a pore string of more than 90%, and the porosity of the sand does not exceed 50%. Therefore, the permeability of the geomembrane is very strong, and the ability of the mineral fabric to select agriculture is better than that of the co-woven fabric. The effect of textile filtration is mainly determined by the weaving density and the diameter of the ties, the weaving density is large, and the corresponding aperture is small.
The pore size and the state of the distribution of the geomembrane directly affect the water permeability, and the influence of different chemical fiber materials, different fiber fineness and fabric thickness on the water permeability is not very obvious. The pseudo-selection of the geotextile aperture depends on the nature of the soil to be protected. Design, and then the manufacturer can produce according to the design requirements. The design requirements and quality of the filter layer are guaranteed. The soil for the filter layer: fabric - a wide width fabric of about 4 m, which is not only easy to lay, but more importantly, the integrity of the filter layer is good, and it has a good protective effect on the soil.
In the previous article of geomembrane manufacturer http:// we mentioned that in some cases, the use of geotextile filter layer alone can not fully meet the needs of geomembrane filtration, such as the two-way water flow or pumping effect on the upstream side of the slope protection. Wherever, a granular material layer may be provided between the protective layer and the geotextile filtration to form a mixed reverse filtration layer, the purpose of which is to: 1 reduce the hydraulic ratio of the seepage in the base soil; 2 in the large stone protective layer The construction period serves as a protective layer for the geotextile filter layer; 3 when the protective layer is partially damaged, it can be temporarily used as a slope protection.
When the base soil is sandy silt and fine sand, they are easily moved down the slope by the hydraulic load. This process is caused by the instantaneous uplift force of the water pressure, which may cause the base soil to be unstable. For this purpose, one of the following checks is required: 1 whether a certain percentage of the soil has a particle size of less than 60 pm (0.06 mm), and whether the particle size of the soil is greater than 0. 02 mm, but less than 0.1 mm. ;3 whether the plasticity index Ip
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