Overview
Geocomposite drainage nets are engineered materials designed to provide efficient drainage in geotechnical and civil engineering applications. They consist of a three-dimensional polymer core (typically HDPE or PP) sandwiched between one or two geotextile layers. This structure creates flow paths for liquids while preventing soil particle clogging. The material combines the drainage capacity of thick geomats with the filtration properties of geotextiles. It serves as a modern alternative to traditional stone drainage systems, offering significant space and weight savings. Manufacturers produce various configurations with different core geometries and geotextile combinations to meet specific project requirements.
Structure and Working Principle
The drainage net's core features a dimpled or cuspated design that creates void spaces for fluid movement even under heavy loads. When covered with geotextiles, these voids remain open while preventing soil infiltration. The upper geotextile filters incoming water, while the lower layer (if present) provides additional protection. Under hydraulic pressure, water flows horizontally through the core's channels much faster than through soil. The system can handle both planar flow (across slopes) and transmissional flow (through the plane). Core thickness typically ranges from 4-20mm, with thicker versions offering higher flow capacity and compressive strength for demanding applications.
Key Features
Modern geocomposite drainage nets offer several advantages over conventional systems. Their high flow capacity (often exceeding 0.5L/m/s) ensures efficient water removal even in challenging conditions. The materials exhibit excellent chemical resistance to pH ranges from 2-13, making them suitable for landfill and industrial applications. Durability features include resistance to biological degradation, creep resistance under long-term loading, and UV stabilization for exposed installations. Lightweight construction (typically 500-2000g/m²) simplifies transportation and installation compared to gravel systems. Some products incorporate anti-clogging additives or special geotextile treatments for enhanced performance in fine-grained soils.
Application Areas
These drainage nets serve critical functions across multiple industries. In civil engineering, they're used behind retaining walls, beneath roadways, and in slope stabilization projects to prevent water pressure buildup. Landfill applications include leachate collection systems and gas venting layers in both base and cover systems. The construction industry utilizes them in green roofs, plaza decks, and foundation drainage. Sports field installations improve turf drainage while reducing construction depth. Other applications include tunnel drainage, agricultural drainage systems, and erosion control in coastal or riverbank projects. The material's versatility allows customization for nearly any drainage challenge.
Maintenance and Precautions
Proper installation is crucial for optimal performance. The material should be rolled out with minimal wrinkles, with overlaps of 300-600mm depending on site conditions. Avoid dragging over sharp objects that could puncture the geotextile. Immediate covering with backfill material protects against UV degradation and wind uplift. For long-term performance, select appropriate geotextiles based on soil characteristics to prevent clogging. In high-load applications, verify the core's compressive strength matches expected loads. Periodic inspections should check for sediment buildup or damage in exposed edge conditions. Most quality products maintain functionality for 50+ years when properly installed.
B2B Procurement Guide
When sourcing geocomposite drainage nets, specify key parameters including core thickness, compressive strength (at various deformation levels), and flow capacity under relevant loads. Geotextile properties like weight, pore size, and permeability should match soil conditions. Consider roll dimensions (typically 2-6m wide, 30-100m long) for project efficiency. Request manufacturer test reports for long-term flow performance and interface shear strength if used in slope applications. For large projects, factory visits can verify production quality control. Lead times vary from 2-8 weeks depending on customization requirements and order volume.
Related Manufacturers
- 主营：土工膜、土工布、复合土工膜
- 主营：土工膜
- 主营：土工膜、土工布
- 主营：防渗膜、防水板、植生袋、复合膜、土工布、土工膜、防渗土工布、防水土工布、复合排水板、复合土工膜、复合土工布、防渗土工膜、HDPE土工膜、护坡袋、生态袋、排水板、植草格、蓄排水板、护坡生态袋、虹吸排水板、排蓄水板、复布排水板、凹凸排水板、HDPE排水板、绿色生态袋
- 主营：土工膜、防水防渗土工
- 主营：防草布、除草布、水泥毯、土工膜、土工布、排水网、防护人工湖、排水板、无纺布、防渗膜、护坡铺路、防汛沙袋、围堰沙袋、园艺地布、覆膜防水毯、护坡生态袋、草籽生态袋、混凝土帆布、膨润土防水毯、绿色涤纶长丝、速干水凝土毯、防汛专用沙袋、挡水消防专用袋、边坡绿化防汛袋、抗老化塑料茶园
- 主营：防渗膜、排水板、机织布、土工膜、土工布、复合土工膜、排水网、土工袋、土工格栅、水泥毯、防草布、膨润土防水毯、沙袋、聚乙烯路基板、三维网、生态袋、石笼网、椰丝毯、稻草椰丝毯、绿化椰丝毯、生态修复椰丝毯、河道铺设椰丝毯、生态椰丝毯、带草籽椰丝毯、柔性水泥纤维毯
- 主营：土工格栅、三维植被网、镀锌铁丝网
- 主营：防渗膜、防水膜、防水板、土工布、土工膜、光面膜、盖草布、遮草布、除草布、生态袋、聚乙烯、防潮膜、gcl钠基、糙面hdpe、PE膜、聚乙烯膜、隔离膜、白色地布
- 主营：土工布、土工膜、编织土工布、排水网
- 主营：三维植被网、塑料排水盲管、硬式透水管、三维土工网垫、整体式复合反滤层、渗排水网垫、塑料盲沟、软式透水管、车库顶板滤水板、W型波形排水垫、生态袋
- 主营：网裂贴、防裂贴、生物毯、土工格室、土工管袋、土工膜袋、人工浮岛、塑料排水网、复合土工膜、复合排水网、防水毯、防渗膜、贴缝带、玻纤格栅、护坡模袋、草石隔离带
- 主营：透水管、玻纤布、防草布、土工膜、土工布、土工网、土工滤网、土工格室、土工管袋、土工格栅、防尘布、生态袋、无纺布、生物毯、植草板、除草布、护坡网、草坪砖、贴缝带、防水板、防渗膜、椰丝毯、蓄排水板、排水软管、消防通道
- 主营：防草布、pe防渗膜、金银花园、2.0土工膜、防渗土工布、不透水土工布、白色地布、膨润土垫、盖草地布、塑料薄膜、pe防草地布、pp防草地布、育苗防草地布、白色防草地布、PE膜、聚乙烯膜、防水膜、防潮膜、隔离膜
- 主营：水泥毯、排水板、防渗膜、土工布、土工格栅、复合土工膜、复合排水网、土工网植草护坡、土工席垫、玻纤土工格栅、钢塑土工格栅、双向塑料土工格栅、单向塑料土工格栅、土工格室、蜂巢格室、长丝无纺布、软式透水管、透水盲沟管、绿化草籽植生毯、生态袋、三维植被网、抗裂贴、椰丝毯、应力吸收贴、植生袋
- 主营：灌缝胶、抗裂贴、贴缝带、土工格栅、土工布、玻纤土工格栅、钢塑复合土工格栅、塑料土工格栅、玄武岩纤维土工格栅、涤纶土工格栅、玻璃纤维土工格栅、土工网、防裂贴、道路密封胶、灌封胶、排水带、玻纤格栅、玄武岩纤维抗裂网、玻纤网
- 主营：水泥毯、塑料排水板、膨润土防水毯、塑料土工格栅、三维复合排水网、土工席垫、复合土工膜、复合波形排水网垫、土工布、土工膜、高强土工格室、玻纤土工格栅、钢塑土工格栅、硬式透水管、塑料盲沟管、软式透水管、植草格、沥青冷补料、三维植被网、碳素波纹管、单双壁波纹管、pe锚固板、生态袋、椰丝毯、PP蓄水模块
- 主营：垃圾填埋场防渗膜、水产养殖防渗膜、生态袋、土工布、三维复合排水网、土工模袋、土工滤网、土工管袋、三维土工网垫、植生袋、水土保护毯、膨润土防水毯、聚乙烯绳软体排、软体排、软式透水管、硬式透水管
- 主营：隧道防水板、透水管、膨润土防水毯、HDPE土工膜、长丝土工布、短丝土工布、糙面土工膜、复合土工膜、900型土工膜焊接机、800型土工膜焊接机、复合排水网、水泥毯、防草布、HDPE排水板、抗老化编织袋、池塘衬垫