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What is the function of the composite drainage network

RELEASE TIME :

2022-06-27 15:25

What is the function of the composite drainage network?

With the development of modern industry, the requirements for environmental cleanliness are getting higher and higher, and the demand for composite drainage pipe network is more urgent. Composite drainage pipe network mainly requires small drainage force and high drainage efficiency. So, what is the function of the composite drainage network?

复合排水网的功能作用是什么

What is the function of the composite drainage network?

1. Lay between the foundation and the sub-base to drain the accumulated water between the foundation and the sub-base, block capillary water, and effectively combine with the edge drainage system. This structure automatically shortens the drainage path of the foundation, greatly shortens the drainage time, and can reduce the number of foundation material choices (ie, finer materials and less permeable materials can be used). Can prolong the service life of the road.

2. Laying a drainage pipe network on the sub-base can prevent the sub-base fine materials from entering the sub-base (i.e. play an isolation role). Aggregate will enter the upper part of the geonet to a limited extent. In this way, the composite geotextile drainage network also has the potential function of restricting the lateral movement of the aggregate base, so that its function is similar to the reinforcement function of the geogrid. In general, the tensile strength and stiffness of composite geotextile drainage nets are superior to many geogrids used for foundation reinforcement, and this limitation will increase the bearing capacity of the foundation.

3. After the road is aging and cracks are formed, most of the rainwater will enter the road section. In this case, the drainage network is laid directly under the pavement, rather than under a drainable foundation. Drainage nets collect water before it reaches the foundation/subbase. And a film can be wrapped at the bottom of the drainage pipe network to further prevent water from entering the foundation. For rigid road systems, this structure allows roads to be designed with a higher drainage coefficient Cd. No matter for rigid road or flexible road system, this structure can prolong the service life of the road.

4. Under the northern climate conditions, the laying of drainage pipe network can help reduce the impact of frost heave. If the freezing depth is deep, geotextiles can be laid in shallower places in the subgrade to act as capillary plugs. In addition, it is often necessary to replace it with a granular subbase that is not prone to frost heave and extends down to the freezing depth. Frozen backfill can be directly filled on the drainage pipe network until the foundation line of the ground. In this case, the system can be connected to a drain outlet so that the water table is at or below that depth. This may limit the development of ice crystals. When the ice in cold regions melts in the spring, there is no need to limit traffic loads.

What are the greening methods of composite drainage network?

1. Hydraulic spraying grass planting for slope protection

2. Slope protection with guest soil and vegetation

3. Thick substrate plant slope protection

4. Geotextile grass planting slope protection pad

5. Geocell grass planting slope protection

6. Honeycomb grid grass planting slope protection

7. Fill and plant grass slope protection within the frame.

8. Gabion slope protection

9. Slope protection plant belt (bag)

10. Vetiver technology vegetation slope protection 11. Plant fiber slope protection blanket.

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