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The construction of highways has greatly facilitated people's travel and production and life. In the long-term use, some roads will have settlement and cracks. These problems are not simply caused by vehicle rolling, but the freezing and thawing of the roadbed with high water content will also cause these problems. Therefore, we need to solve the problem from the root.
Some roads are built directly on the soil layer. Even if geogrids are used to reinforce the soil layer, we still have to consider its drainage problem, because there may be a soil layer with high water content in the soil layer, which requires us to block it, which is equivalent to waterproofing the entire roadbed. Therefore, the materials used are blind ditch pipes and geomembranes. The blind ditch pipes are arranged under the geomembrane to block the penetration of groundwater, and the geomembrane is to ensure that the upper soil is not wetted by water. For construction, the construction of different terrain conditions is quite different, and it needs to be carried out according to different geological conditions.
The application of geomembranes in road construction can be said to be relatively common. As far as highways are concerned, our common median isolation belt adopts a drainage structure of blind ditch plus geomembrane, which is used to prevent excess water from being discharged along the drainage network when we water the greening in the middle. On both sides of the highway, the drainage channels we see are actually paved with geomembranes at the bottom, and the geomembranes laid on the slopes have two functions, one is to prevent water from the hillside from flowing into the roadbed, and the other is that when it rains, the water can be discharged through the drainage ditch.
The application of geomembranes in roads usually has specific designs and construction plans, and each link needs to be strictly controlled to improve its usability and functionality.
