The common disease types of soil erosion on slopes are: flowing rocks and mud, falling rocks, collapses, landslides, etc., which will damage the environment and affect the safety of people. Slope protection should follow the following principles:
Adapt measures to local conditions: Determine appropriate protective measures according to the actual situation in combination with the topography of the slope;
Taking into account the landscape: The significance of slope protection is not only limited to protecting the slope, but also should be in line with the environment and be reasonable and beautiful.
Introduction to the principle of slope protection:
The 3D geomat slope protection has a very good protection effect on the slope. The geomat slope protection technology that has appeared in recent years not only significantly improves the overall and local stability of the slope, but also lowers the engineering cost.
Three-dimensional vegetation net slope protection refers to a new technology that uses plants and combines the advantages of geosynthetics to build a protection system with its own growth ability on the slope surface, and strengthens the slope through the growth of plants. According to the characteristics of slope topography, soil quality and regional climate, the purpose of root reinforcement and stem and leaf erosion prevention can be achieved through plant growth activities, dense vegetation coverage can be formed on the slope surface, and a root system with intertwined roots can be formed on the topsoil layer, which can effectively inhibit the The erosion of the slope by the rainstorm increases the strength of the soil, thereby greatly improving the stability and scour resistance of the slope.
Construction of 3D geomat:
(1) Lay the HDPE geomat on the slope from top to bottom along the slope, and maintain a smooth combination between the net and the slope.
(2) When the geomat is laid on the top of the slope, it needs to be extended by 40-80cm, buried in the soil and compacted.
(3) Fix the geoamt from bottom to top with U-shaped steel bars above ф6mm. The U-shaped steel bars are about 15-30cm long, about 8mm wide, and the spacing between U-shaped steel bars is about 1.5-2.5m. Use 8﹟U-shaped iron in the middle. Nails or bamboo nails for auxiliary fixation.
⑷ After the geomat is laid, cover the soil evenly on the geoamt, and cover the net bag until there is no empty bag, and ensure that the thickness of the soil on the geoamt is not less than 12mm. Then the fertilizer, auxin and cement are mixed evenly in a certain proportion and applied to the surface layer.
After the backfill is completed, hydraulic spraying is carried out, that is, grass seeds (sprayed at about 25 grams per square) and the adhesives, wood fibers, fertilizers, auxins, humectants and water that promote their growth are mixed and stirred in a certain proportion to form a uniform The mixed liquid is evenly sprayed on the slope surface by the hydraulic sprayer.
After the spraying and planting is completed, the surface of the slope is covered with non-woven fabric to maintain the moisture on the slope and reduce the scouring of the seeds by rainfall, so as to promote the growth of the seeds. If the temperature is too high, there is no need to cover it to avoid the occurrence of pests and diseases.