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4Selection items
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GBStandards cited
Summary: River and slope works follow GB/T 50290-2014: cement mat or concrete lining below normal water level for scour resistance, eco bags with revegetation above, filament geotextile filtration inside the slope and toe protection against undermining - a three-tier anti-scour plus eco system.
Selection Table
| Position / function | Recommended material | Standard |
|---|---|---|
| Below water level | Cement mat / concrete lining | JC/T 2884-2025 |
| Above water level | Eco bags + hydroseeding | Enterprise standard |
| Slope filtration | 300-400 g/m2 filament geotextile | GB/T 17639-2023 |
| Toe protection | Gabion / concrete key | Structural design |
Installation Steps
- Trim and compact slope, excavate toe trench
- Lay filament geotextile filtration layer
- Lay cement mat below water level and water-cure
- Stack eco bags in staggered courses with anchors above
- Hydroseed grass-shrub mix, build cut-off ditches
- Water through establishment period until vegetation stabilizes
