Advantages of gabion cages for river protection:
1. Good eco-environmental protection
The gabion cage and gabion cage structure steel wire mesh are made of corrosion-resistant low-carbon steel wire material, and the main structural material stone is sourced from the local area or nearby of the project. Because there are more stone-filled pores in the gabion cage and gabion cage structure, they have good water permeability and self-drainage, which can realize the natural exchange and retention of the river water and the water below the structure, and enhance the self-purification ability of the water body , improve water quality, and at the same time, the multi-void structure provides living space for various aquatic animals and plants, which is conducive to the ecological maintenance of small watersheds and maintains the natural balance of the ecosystem. The gabion cage and gabion cage structure do not use cement and other artificial materials that damage the natural environment, so that the damage that the project may cause to nature is minimized and restored in a short period of time. The gaps of stone filling are artificially laid with soil layer or naturally deposited soil, which creates conditions for greening and vegetation growth, and realizes greening and beautifying the ecological environment.
2. Good overall stability
Gabion cages and gabion net cages are double-stranded steel wire grid structures woven by special machines, and the connections are very tight. deformation, but does not affect the overall integrity of the gabion cage and gabion cage structure, even if a steel wire in the structure breaks, it will not affect the structure and strength of the cage,
It has very obvious advantages compared with the mortar masonry structure and the slope protection structure.
The structure of gabion cage and gabion cage has moderate deformation characteristics, which is a typical flexible protective structure. It can well adapt to the uneven settlement of the foundation and maintain the overall stability of the structure of gabion cage and gabion cage.
3. Strong erosion resistance.
The gabion cage and gabion cage structure are used as slope protection or retaining wall projects on rivers with high flow velocity, and have strong erosion resistance.
According to relevant experiments, the anti-scour coefficient of the gabion cage and gabion cage structure is twice that of the general riprap protection project. Affected by water erosion, even if the stones in the gabion cage and gabion net cage pad are displaced, the deformed cage structure will have a new balance, and the overall integrity will not be damaged.
The structure of gabion cage and gabion net cage is a flexible structure. There are certain gaps in the cage filled with stones or other materials, which effectively reduces the impact of wave pressure and reduces or eliminates the damage to the protection project.
4. Strong construction convenience
The construction of gabion cages and gabion cages has low environmental requirements. Gabion cages and gabion net cages are produced in a factory according to the design drawings, and the gabion cages and gabion net cages are transported to the construction site, assembled and filled with stones according to the construction drawings. Stone materials can be obtained locally or mined nearby, and the cost is low. The construction of gabion cage and gabion net cage structure is easy to operate, less in process, less affected by climate, workers can be constructed with simple training, the overall construction efficiency is high, and the quality of the project is easy to guarantee. When there is machinery to cooperate, the construction progress can be accelerated. The construction period is short. Compared with the construction of such structures, the construction efficiency of the gabion cage and gabion cage structure is higher, which is 2 to 3 times that of the traditional structure. The installation and construction of gabion cages and gabion cages can also be carried out on water, and winter construction will not affect the construction progress and quality.
5. High economic durability
The construction cost of the gabion cage and the gabion cage structure is low. Compared with the slope protection structure made of masonry and the masonry slope protection structure, it has obvious price advantages. The construction of gabion cages and gabion net cages has low requirements on the environment and climate, and can be constructed in water and in winter. Stone materials can be obtained locally or provided nearby. They have low requirements for workers' skills and construction machinery operations, and the construction speed is fast. The data show that the construction cost of the gabion cage and grid box structure is significantly lower than that of the slope protection and the masonry slope protection. After the completion of the project, the gabion cage and gabion cage structure will gradually integrate with the natural environment. During the project life cycle, the later maintenance costs will be very low or no, while the slope revetment made of concrete and masonry will crack and collapse , high maintenance costs,
When the damage is serious, the service life of the project will be greatly reduced. According to the comprehensive analysis, the construction cost and use cost of gabion cage and gabion cage structure are the lowest.
Gabion cages and gabion cages have a stable structure and long service life. The steel wires selected for gabion cages and gabion cages adopt surface treatment processes such as thick galvanizing, Galfan plating, and plastic coating. 20--30 years, Galvanized gabion cages and gabion cages have a service life of 30--50 years. After plastic coating process, it has the characteristics of corrosion resistance, anti-static and anti-aging, and has a longer service life. According to tests, the service life of gabion cages and gabion cages using plastic-coated Galfan steel wires can reach 70--100 years. According to the environment of the structure, different surface treatment products can be selected to adapt to various environments and meet the requirements of economy and design life.