The three-dimensional vegetation network slope protection technology combines the advantages of geotechnical network and vegetation slope protection, and can effectively solve the protection problems of rock slopes and high steep slopes. Application examples show that three-dimensional vegetation network slope protection is extremely beneficial for the stability of slopes, and the protection effect is very good.
The three-dimensional vegetation network slope protection technology that has emerged in recent years not only significantly improves the overall and local stability of slopes, but also benefits the growth of slope vegetation. At the same time, the engineering cost is also low, which is in line with the development direction of slope engineering and has great application value in soil and water conservation in China.
3D vegetation network slope protection refers to a new technology that utilizes active plants and engineering materials such as geosynthetics to construct a protective system with its own growth ability on the slope surface, and strengthens the slope through the growth of plants. Based on the characteristics of the slope terrain, soil quality, and regional climate, cover the surface of the slope with a layer of geosynthetic material and plant various plants in a certain combination and spacing. The purpose of root reinforcement and erosion prevention of stems and leaves can be achieved through the growth of plants. Through the ecological slope protection technology, dense vegetation coverage can be formed on the slope surface, and the roots of intertwined roots can be formed in the topsoil layer, which can effectively inhibit the erosion of rainstorm runoff on the slope, increase the shear strength of the soil, reduce the pore water pressure and soil gravity, thus greatly improving the stability and erosion resistance of the slope.
The erosion resistance of vegetation is realized through its three main components: first, the growth layer of plants (including perianth, leaf sheath, leaf and stem), which can prevent the surface soil of slope from being directly eroded by rain through its own dense coverage, reduce the scouring energy of rainstorm runoff and surface runoff speed, thus reducing soil loss; The second is the humus layer (including the interface between the deciduous layer and the rhizome), which provides a protective layer for the surface soil of the slope; The third is the root layer, which provides mechanical stability by reinforcing and anchoring the surface soil on the slope. In general, during the early stages of plant growth, the root system formed by a single plant is only loosely intertwined, without a long lying root system, which is easy to separate from the soil layer and does not provide protection.
The application of 3D networks achieves more thorough shallow protection by enhancing the effects of the above three aspects. One is to increase its protective performance and mechanical stability within a certain thickness range; Secondly, due to the existence of a three-dimensional network, the massive roots of plants are connected to the reinforcement of the three-dimensional network, forming a plate structure (equivalent to reinforcing the surface soil of the slope), thereby increasing the tensile and shear strength of the protective layer, limiting the expansion of the phenomenon of "gradual damage" caused by erosion (erosion can directly cause damage to individual plants, and over time, the damaged area increases), Ultimately limiting the occurrence of shallow surface sliding and uplift of slopes.
| Project/Specification |
EM2 |
EM3 |
EM4 |
EM5 |
| Weight per unit area ≥ |
220 |
260 |
350 |
430 |
| thickness ≥ |
10 |
12 |
14 |
16 |
| Longitudinal yield force per linear meter ≥ |
0.8 |
1.4 |
2.0 |
3.2 |
| Lateral yield force per linear meter ≥ |
0.8 |
1.4 |
2.0 |
3.2 |
| Note: Special specifications and sizes can be produced according to contract or agreement requirements |
Installation Instructions
1. During construction, small bamboo poles or wooden sticks can be threaded into the entire roll of mesh pads, and three-dimensional vegetation mesh pads can be pulled out along the way. Bamboo nails, wooden nails, or plastic nails can be used to nail around the edges, with a spacing of 30cm between nails and 10 nails per square meter.
2. In areas with sudden terrain changes or complex terrain, attention should be paid to keeping the mesh flat and increasing the density of nails. Pay attention to the overlap, with a length of 2cm. The nails at the overlap should be driven in smoothly, and the density of the nails should be doubled. The upper mesh cushion at the overlap should be tightly pressed without leaving any gaps.
3. The sowing depth of grass seeds should be determined according to the commercial conditions of the soil and local conditions. Grass seeds should be selected that are suitable for the local climate conditions, have long and developed roots, and it is better to intercrop perennial small shrubs with long roots.
When laying a three-dimensional vegetation network for slope protection and soil stabilization, the longitudinal connection of the mesh pad should have a 60 degree angle, buried 30cm into the soil, and the slope bottom should have a horizontal plane of 50cm or more. Due to the fact that the water content at the upper end of the slope in the project is much lower than that at the lower layer, which is not conducive to the germination of grass seeds, a water ditch should be opened 20cm away from the top of the three-dimensional vegetation net to facilitate irrigation. The timing of laying is crucial for the entire project and should generally be chosen 3-4 months before the rainy season.
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Inventory shooting
Texas Sentai Environmental Protection Technology Co., Ltd. covers an area of 50 acres, with nearly 100 employees and more than 50 professional and technical personnel. We are an environmental protection technology oriented enterprise mainly engaged in the production of a series of new geosynthetic materials, specializing in the design and research and development of geosynthetic materials application, specialized production and manufacturing, construction design services, and system solution services for infrastructure construction projects such as transportation, water conservancy, environmental protection, ecological restoration, environmental governance, municipal construction, and animal husbandry. Our main products include various types of geosynthetic fabrics, geosynthetic membranes, and composite geosynthetic membranes
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