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What are the characteristics of the three-dimensional composite drainage network?

RELEASE TIME :

2022-07-05 10:46

What are the characteristics of the three-dimensional composite drainage network?

Composite drainage network (also known as three-dimensional geotextile drainage board, tunnel drainage board, drainage board) is composed of three-dimensional structural plastic net bonded with permeable geotextile on both sides, which can replace the traditional sand and gravel layer, and is mainly used in landfills , subgrade, tunnel inner wall drainage. So, what are the characteristics of the three-dimensional composite drainage network?

三维复合排水网有什么特性？

What are the characteristics of the three-dimensional composite drainage network?

1. When the load is 720 kPa and the gradient is 2%, the permeability is 2500 m/day and the flow rate is 13 m/m.

2. In the creep test, keep more than 60% of the thickness after 10,000 hours under the load of 1200kPa.

3. The carbon black content of the three-ribbed drainage mesh core is not less than 2%, the density is 0.94 g/cm3, the tensile strength is not less than 36.5 kN/m, the melt index is 1.0 g/10 minutes, and the thickness is 7.6 mm

4. The apparent pore size of the non-woven geotextile is 0.18mm, the water permeability is 0.26 Sec-1, the permeability is 0.2cm/sec, the puncture strength is 580N, the trapezoidal tear strength is 356 N, the tensile strength is 900 N, and the tensile strength is 50%. The breaking strength is 2750kPa.

What are the main characteristics of the composite drainage network greening process?

1. The net bag can reduce the impact energy of raindrops. The unevenness of the surface of the vegetation net can make the wind and water flow produce small eddies on its surface, which can buffer and dissipate energy, reduce the flow rate, and effectively resist the erosion of rainwater;

2. Fillers (soil particles, fertilizers, plant seeds, etc.) can be well fixed and can reduce losses under rain erosion;

3. It acts as a reinforcement on the surface of the slope, thereby effectively preventing the sliding of the surface soil layer;

4. The three-dimensional net helps the grass seeds to grow evenly, and the root system is easy to grow and fix in the slope soil.

5. The three-dimensional vegetation net can be made into a grass blanket and transplanted in different places to meet the engineering requirements of rapid protection.

What are the characteristics of composite drainage network?

1. Strong drainage.

2. High tensile strength.

3. Reduce the probability of geotextile embedded in the mesh core and maintain long-term stable drainage.

4. Long-term high-pressure load (can withstand a compression load of about 3000Ka).

5. Corrosion resistance, acid and alkali resistance, long service life.

6. The construction is convenient, the construction period is shortened, and the cost is reduced.

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