Needle-punched geotextile for hydraulic engineering

Description

Hydraulic engineering needle-punched geotextile is manufactured from polyester (PET) or polypropylene (PP) staple fibers through processes including fiber opening, carding, cross-laid web formation, and high-density needle punching, creating a three-dimensional interconnected structure. With superior permeability and filtration efficiency, it prevents soil erosion by trapping particles while efficiently draining seepage water to mitigate hydrostatic pressure and structural damage. By isolating soil layers and enhancing shear resistance through fiber-soil interaction, it reinforces the stability of canals, dams, reservoirs, and slopes. Resistant to chemical corrosion and microbial degradation, it ensures long-term durability in harsh hydraulic environments. Applied in riverbank protection, culvert drainage, and anti-seepage liners, it extends infrastructure service life by over 20% with reduced maintenance demands.

Key Specifications

Features

High Strength
Maintains strength and elongation in both dry/wet conditions (using synthetic fibers).

Corrosion Resistance
Durable in soils/water with varying pH levels.

Temperature & Aging Resistance
Withstands high temperatures, freezing, and long-term aging.

Permeability
Fibrous gaps ensure efficient water drainage.

Microbial Resistance
Resists damage from microbes and pests.

Easy Installation
Lightweight, flexible, and easy to transport/install.

Functions

Permeable & Drainage: Facilitates water passage while retaining sand/gravel particles.
Efficient Hydraulic Conductivity: Creates drainage channels to dissipate excess liquids/gases.
High Permeability Under Pressure: Maintains performance under soil/water compression.
Stress Redistribution: Disperses concentrated stresses to protect soil integrity.
Layer Separation: Prevents intermixing of adjacent soil, sand, and concrete layers.
Chemical Resistance: Manufactured from PP/PET fibers with acid/alkali/oxidation resistance.
Construction Advantages: Lightweight, easy installation, time efficiency, cost-effectiveness.
Soil Reinforcement: Enhances tensile strength and deformation resistance for structural stability.

Applications

Structural Layer Separation
Isolates material layers in foundations/walls, prevents soil/aggregate mixing, and maintains layer integrity.

Independent Drainage
Functions as structural drainage to expel seepage/pore water, preventing waterlogging-related subsidence.

Slope & Erosion Defense
Combats hydraulic scouring on embankments/retaining walls, ensuring structural durability.

Filtration Interface
Used in drainage systems to filter soil particles while allowing water passage, preventing blockages/soil loss.

Ecological Base Layer
Supports vegetation growth in wetlands/shorelines through stabilized substrate, promoting ecological stabilization.

Application Scenes