Abstract：In the context of intensifying global food security demands and ecological environmental requirements, geosynthetic materials are emerging as a revolutionary technology in aquaculture infrastructure. This article systematically explores the innovative applications of geosynthetics in pond construction, water quality management, and sustainable operations within intensive aquaculture systems.

1. Geosynthetic Solutions for Aquaculture Challenges

Contemporary aquaculture faces three primary technical bottlenecks:
– 38% water loss through traditional earthen pond leakage
– 65% higher disease incidence in conventional cement ponds
– 30% sediment deposition rate in clay-based systems

Advanced geosynthetic materials provide comprehensive engineering solutions:
1.1 Geomembranes (HDPE/LDPE)
– 0.5-2.0mm thickness specifications
– Hydraulic conductivity <1×10⁻¹³ cm/s – 200% elongation at break – UV resistance >20 years

1.2 Geotextile Composites
– Non-woven/woven hybrid structures
– 100-500 g/m² weight range
– Filtration efficiency >90%
– Puncture resistance >2000N

2. Engineering Applications

2.1 Pond Construction Technology
– Triple-layer composite system:
Upper layer: 1.5mm HDPE geomembrane
Middle layer: 400g/m² needle-punched geotextile
Lower layer: GCL bentonite waterproof blanket

2.2 Water Quality Management
– Automated oxygenation systems integrated with geomembrane liners
– pH monitoring probes embedded in geocomposite layers
– 70% reduction in algae proliferation

3. Economic and Environmental Benefits

3.1 Operational Metrics Comparison
| Parameter | Traditional Pond | Geosynthetic Pond |
| Water Exchange | 30%/day | 8%/day |
| Feed Conversion | 1.8:1 | 1.5:1 |
| Stocking Density| 15kg/m³ | 35kg/m³ |
| Disease Incidence| 25% | 6% |

3.2 Life Cycle Analysis
– 40-year design lifespan
– 55% reduction in carbon footprint
– 80% lower heavy metal accumulation

4. Technological Innovations

4.1 Smart Geomembranes
– Embedded IoT sensors for real-time monitoring:
– Temperature gradient detection
– Structural stress analysis
– Micro-crack early warning

4.2 Eco-functional Composites
– TiO₂ photocatalytic coatings
– Antimicrobial polymer additives
– Biofilm-enhanced surfaces

Conclusion: The integration of geosynthetic materials with aquaculture engineering has evolved from simple seepage prevention to a comprehensive technological system encompassing ecological conservation, intelligent management, and sustainable development. Future advancements will focus on multifunctional composite materials and digital twin technologies, driving the aquaculture industry towards precision and ecological sustainability.