The reservoir has been eroded by wind and rain and washed by river water for a long time. There is a danger of bank collapse. Gabion mesh can be used to prevent this from happening.
According to the situation of bank collapse, due to the difference in geological conditions of the reservoir shoreline across the field bank, different types, scales and mechanisms of bank collapse occur. Therefore, the bank collapse control project should be highly targeted and should not be carried out blindly or blindly adopt certain prevention and control engineering measures. It should be treated with remedies and comprehensive management.
Gabion mesh can be used for embankment protection, or for the protection of the entire riverbed and riverbank. It is more suitable for rivers with gentle original bank slopes. Taking the designed low water level as the boundary, the upper part is the slope protection project and the lower part is the foot protection project. The slope protection project is to repair the original bank slope and then lay the slope protection filter layer and the ecological grid mat structure surface layer to prevent water scouring, wave impact, water level changes and groundwater seepage erosion from damaging the bank slope surface; the foot protection project uses anti-scouring materials to lay the underwater riverbed near the foot of the slope to form a protective layer to prevent water scouring and achieve the purpose of protecting the embankment foundation. The biggest advantage of the gabion mesh is its ecology. It is filled with natural stones. There are gaps between the stones, allowing plants to grow in it. Suitable plants can also be sown in a targeted manner. It has the dual functions of engineering slope protection and plant slope protection.
The vegetation construction plan should be made according to the local soil type, soil layer thickness, cross-section type, overall stability, inclination, light characteristics, altitude, climatic conditions and scene requirements, etc., and the construction process of the mesh mat and mesh box should be appropriately adjusted accordingly.
The appropriate vegetation type should be selected according to the local soil type, soil layer thickness, climatic conditions and scene requirements. Generally, the herbaceous plant species in the water area should be selected from drought-resistant grass and legume plants, and the mixed grass seeds should be composed of multiple species (15-20) or a large amount of seeds (30-50g/m2); aquatic plant species should be selected for underwater areas; water-resistant plant species should be selected in water level change areas; in extremely arid areas, drought-resistant, heat-resistant, and barren-resistant plant species should be given priority.
After the gabion mat and gabion box are covered, the top open space should be filled with loam. For gabion mats or gabion boxes with vegetation requirements, nutrient-rich soil should be mixed into the top 20cm of the filling material, and the soil surface should be about 5cm higher than the top frame line of the gabion box.
It is advisable to formulate and implement vegetation maintenance measures based on the characteristics of grass species or shrubs. In arid areas, special attention must be paid to watering and fertilizing to ensure that vegetation can take root and grow lushly.
Post time: May-09-2024