Principles of Slope Stabilization Using 3D Vegetation Nets

Technical Principles

1. Vegetation Erosion Control

• Canopy Layer: Plant foliage intercepts rainfall, preventing direct soil impact.

• Litter Layer: Organic debris forms a protective barrier against surface erosion.

• Root Reinforcement: Root systems mechanically stabilize soil through anchoring and tensile reinforcement.

2. 3D Net Enhancement

• Mechanical Stabilization: The net structure provides immediate slope protection within its thickness range.

• Root-Net Composite: Plant roots interlock with net fibers, creating a reinforced "plate" structure that resists tension, shear, and shallow slope failures.

Construction Workflow

1. Slope Preparation

• Clear loose rocks/debris; round sharp edges (radius ≥15 cm).

• Achieve surface evenness: average undulation ±15 cm (max ±30 cm).

2. Drainage System Installation

• Construct intercept/drainage ditches at:

• Slope crest (to divert upland runoff)

• Toe (collect seepage)

• Benches (if present)

• Slope-face drains: Added if water flow volume necessitates.

3. Net Deployment & Fixing

• Unroll 3D nets top-down; embed top edge into crest ditch.

• Overlap adjacent nets ≥10 cm; secure with U-shaped soft-iron pins (spacing: 1 pin/m²).

4. Soil Spraying

• Growth Medium: Blend humus, compost, peat, hydrogels, and binders.

• Apply ≥5 cm thickness, level with net protrusions.

5. Hydroseeding

• Mix seeds with:

• Mulch fibers

• Binders/hydrogels

• Fertilizers (compound + slow-release)

• Microbial inoculants

• Spray uniformly via hydraulic seeder.

6. Blanketing

• Cover with 14 g/m² nonwoven fabric (bamboo-pin fixed). Remove when seedlings reach ~3 cm.

7. Maintenance

• Watering: Maintain soil moisture for germination.

• Nutrition: Fertilize based on plant growth stages.

• Pest/Disease Control: Monitor and treat as needed.

Key Technical Parameters

Conclusion: This integrated approach combines bioengineering (vegetation) and geosynthetics (3D nets) to create durable, ecologically sustainable slope protection.

3D Vegetation Net Slope Stabilization: Synergizing Nature and Engineering for Erosion Control.