Erosion Control Filter Bags
1. Anti erosion and loss prevention: The high-strength bag body resists the erosion of rainwater and water flow, effectively blocking the loss of soil particles, and the erosion prevention effect is more than 50% better than ordinary sandbags.
2. Non clogging of drainage holes: The fabric pores are permeable to water for drainage, while filtering sediment to prevent blockage, avoiding the accumulation of water that increases the weight of the slope and leads to collapse.
3. Easy to lay on terrain: The flexible material can deform with the slope, suitable for complex terrains such as steep slopes and riverbanks, and is easy to stack without leveling the site.
4. Able to grow grass and protect the ecology: It can be filled with soil and grass seeds, and later vegetation can penetrate the bag to reinforce the slope, balancing protection and ecological restoration.
Products Introduction：
Erosion Control Filter Bags are functional geotextiles designed specifically for soil and water conservation and slope protection. Made of high-strength polypropylene (PP) or polyester (PET) geotextiles, the bags can be filled with sand, soil, or biofill, creating a flexible bag-like structure through sewing or heat-sealing. Their core function is to address soil erosion in slopes, riverbanks, and roadbeds through a triple-action approach: physical barrier, filtration and drainage, and flexible reinforcement. They protect against soil loss caused by rainwater erosion and water flow, channel water flow through the bags' permeability, and enhance slope stability through their stacked structure. Suitable for applications such as river management, highway slope protection, and mine restoration, these bags offer a cost-effective, high-performance erosion control solution, offering convenient installation and ecological compatibility.
Product Features：
1. Anti-scouring and Erosion, Strong Soil-Solidifying Capacity: The bags are constructed from high-tensile-strength geotextile (breaking strength ≥15kN/m), which is wear- and tear-resistant. Once filled and stacked, they form a continuous protective barrier that directly resists rainwater erosion (with water velocities up to 3-5m/s) and surface runoff, effectively preventing soil particle loss. Compared to traditional sandbags, this erosion prevention capability is over 50%.
2. Filtration and Drainage, Preventing Water Accumulation and Weight Increase: The fabric's precisely controlled pores (0.1-0.5mm) allow water to penetrate and drain, preventing water accumulation in the bag and the underlying soil, which could lead to weight increase and structural instability. The fabric also filters fine soil particles in the water flow, preventing drainage blockage, maintaining smooth drainage over the long term, and minimizing damage to the slope caused by rainwater infiltration.
3. Flexible Stacking, Adaptable to Complex Terrain: The bag's texture is flexible and can adapt to the terrain after filling. Whether it's a gentle slope or a steep slope (slope ≤ 60°), or on irregular riverbanks or roadbed edges, staggered stacking can form a tight protection system. No site leveling is required, making it adaptable to various complex terrains and far superior to rigid concrete blocks.
4. Ecological Compatibility, Assisting Vegetation Restoration: The bag's material is biodegradable (select models) or corrosion-resistant. When filled with ecological soil, grass seeds, and other materials, it provides a support for plant growth. Later, plant roots penetrate the bag and integrate with the soil, forming a "plant-bag" composite protective layer, achieving an integrated "engineering protection + ecological restoration" solution. It is particularly suitable for use in ecologically sensitive areas.
Product Parameters：
project | unit | CWGD50S | CWGD90/120 | CWGD90S | CWGD100S | CWGD120S-B | CWGD120S-C | CWGD130S | CWGD200S-C | |
Tensile strength-radial | kN/m | 55 | 90 | 90 | 100 | 130 | 130 | 130 | 220 | |
Tensile strength-Weft | 50 | 120 | 90 | 100 | 120 | 120 | 130 | 210 | ||
Strain elongation-radial | % | 16±1 | 12±1 | 9±1 | 10±1 | 10±1 | 10±1 | 10±1 | 12±1 | |
Extensional elongation-Weft | 10±1 | 8±1 | 8±1 | 8±1 | 8±1 | 8±1 | 8±1 | 8±1 | ||
Breakage strength at 2% elongation | warp direction | kN/m | 5/15 | 14/40 | 30/30 | 30/30 | 20/40 | 22/40 | 20/45 | 15 |
Breakage strength at 5% elongation | warp direction | kN/m | 14/33 | 38/90 | 75/75 | 75/75 | 80/100 | 84/40 | 80/110 | 90 |
mass area ratio | g/m² | 285 | 440 | 390 | 430 | 540 | 540 | 560 | 850 | |
Joint tensile strength | kN/m | 35 | 90 | 60 | 70 | 100 | 100 | 110 | 170 | |
Static Burst Strength (CBR) | KN | 5 | 10 | 10 | 13 | 15 | 15 | 16 | 22 | |
Dynamic perforation | mm | 10 | 8 | 12 | 12 | 10 | 10 | 11 | 8 | |
Equivalent aperture (0g0) | mm | 0.9 | 0.48 | 0.52 | 0.45 | 0.4 | 0.3 | 0.43 | 0.4 | |
Permeability (Q50) | L/m²/s | 200 | 40 | 20 | 15 | 12 | 6.5 | 15 | 15 | |
Ultraviolet resistance (500h strong storage rate ） | % | 90 | 90 | 85 | 85 | 85 | 85 | 85 | 85 | |
Product Applications：
1. River and Riverbank Protection: These bags are laid on the banks of small and medium-sized rivers and urban rivers, stacked to form a 1-2m high scour barrier to prevent bank collapse caused by erosion during floods. The bags are filled with local soil and mixed with grass seeds. Later, vegetation growth strengthens the bank, balancing flood control and ecological landscape needs.
2. Highway and Railway Slope Protection: These bags are applied to the slopes or shoulders of highway and railway fills. Stacking them forms a protective barrier to prevent landslides and collapses caused by rainwater erosion of the slope soil. Combined with spraying greening, they can quickly restore slope vegetation and reduce road maintenance costs.
3. Mining and Quarry Revegetation: These bags are laid on exposed slopes after mining operations, filled with crushed stone and improved soil. They prevent the slide of loose rock and gravel, provide a foundation for vegetation growth, accelerate mine ecological restoration, and reduce the impact of soil erosion on the surrounding environment.
4. Protection of construction sites and temporary sites: Laying filter bags on the temporary slopes and edges of earth piles at construction sites can prevent the loss of sediment caused by rainwater erosion during construction, and prevent mud from entering the municipal pipe network or surrounding water bodies, meeting environmental protection construction requirements.
Erosion Control Filter Bags, with their core advantages of erosion resistance, drainage filtration, flexible adaptability, and ecological compatibility, precisely address the pain points of soil and water erosion: poor protection, difficult terrain adaptation, and severe ecological damage. Whether used for long-term riverbank protection, ecological restoration of roads and mines, or temporary soil and water conservation at construction sites, their flexible stacking and multifunctional design ensure both erosion prevention and ecological restoration, while offering convenient and cost-effective construction. Combining engineering protection with ecological restoration, this product provides an efficient and sustainable solution for various soil and water conservation projects, making it an ideal choice for promoting greener, more cost-effective erosion control projects.
