Three-Dimensional Composite Drainage Network The Key To Successful Groundwater Drainage

A three-dimensional composite drainage network is a new type of geosynthetic material, mainly consisting of a three-dimensional geotechnical mesh core and non-woven geotechnical fabrics adhered to both sides. The middle bars of this material have high rigidity and are arranged longitudinally, forming drainage channels. The upper and lower cross bars form support, preventing the geotechnical fabric from embedding into the drainage channel, thus ensuring good drainage performance even under high load.

Main Functions and Uses

The main function of the three-dimensional composite drainage network is drainage. It can quickly drain the groundwater of the road while having the ability to block capillary water and maintain the pore system. In addition, it can also play the role of isolation and foundation reinforcement. Due to these properties, it is widely used in various engineering applications such as landfill drainage, road base and surface drainage, railway drainage, tunnel drainage, underground structure drainage, retaining wall back drainage, and garden and sports field drainage.

Construction Methods

During the construction process, the first step is to treat the foundation, level and compact the lower layer, and ensure that the flatness and compaction meet the requirements. Then, on the well-leveled subgrade, a composite drainage net is laid, requiring the material to be smooth and tightly attached to the subgrade, avoiding twists, folds, or overlaps. The overlapping parts need to be fixed with U-shaped nails or connectors. After completion of the laying, self-inspection and backfilling treatment are also required to ensure the quality and functionality of the drainage net.

Product Features

The product features of three-dimensional composite drainage network include:
1. Excellent drainage : Its drainage capacity is equivalent to a one-meter thick layer of gravel drainage.
2. High tensile strength : Able to withstand significant stretching forces without breaking.
3. Corrosion resistance, acid and alkali resistance : Excellent chemical stability, not easily corroded.
4. Long service life : Can maintain long-term use performance in various harsh environments.
5. Easy Construction and Cost Reduction : Due to its lightweight and easy-to-operate features, it can shorten the construction period and reduce project costs.
In summary, three-dimensional composite drainage network, as a high-performance geotechnical material, plays an important role in modern civil engineering.

Product Specification and Technical Index

(CJ/T 452—2014)