What are the design principles and advantages of the three-dimensional composite drainage network?

The three-dimensional composite drainage network is a new type of drainage system with multi-level and multi-functional design principles and advantages. Through the three-dimensional drainage system, it forms an integrated drainage channel on the surface, underground and inside the building, which can effectively treat, transfer and discharge rainfall, sewage and surface water, etc.

1. Design principle:

1. Multi-level drainage channel: The three-dimensional composite drainage network is composed of surface drainage system, underground drainage system and building drainage system. The surface drainage system adopts micro ditches and open drainage channels, which can drain surface water in time; the underground drainage system adopts underground water pipe network, which can collect and discharge groundwater; the internal drainage system of buildings adopts indoor drainage pipes, which can discharge the water inside the building. Sewage and waste water.

2. Multifunctional drainage system: The three-dimensional composite drainage network can not only discharge rainfall and surface water, but also treat and transfer sewage and waste water. It can treat sewage through physical, chemical and biological methods to make it meet environmental and hygienic requirements, further reducing the risk of water pollution and disease transmission.

3. Integrated drainage channel: The three-dimensional composite drainage network forms an integrated drainage channel through the organic connection of underground, surface and building internal drainage systems. This design principle can realize the flow and transfer of water at different levels and locations, and improve the efficiency and effect of drainage.

2. Advantages:

1. Reduce the risk of urban waterlogging: the three-dimensional composite drainage network can quickly drain away rainfall and surface water through a flexible drainage system, reducing the risk of urban waterlogging. Especially in severe weather such as heavy rainfall and typhoons, it can provide rapid drainage capacity and protect urban infrastructure and residents' property safety.

2. Improve the efficiency of water resources utilization: the three-dimensional composite drainage network can collect and utilize renewable water resources such as rainwater and groundwater, reducing dependence on tap water. Through the use of flood storage and detention facilities and rainwater utilization systems, rainwater can be stored and used for toilet flushing, greening and landscape irrigation, improving the efficiency of water resource utilization.

3. Reduce sewage discharge and water resource pollution: the three-dimensional composite drainage network can process and transfer sewage at multiple levels, reducing sewage discharge and water resource pollution. By adopting technologies such as biological filter, artificial wetland and chemical treatment, harmful substances in sewage can be removed or degraded to protect the health of the water environment and ecosystem.

4. Improve the quality of the ecological environment: The three-dimensional composite drainage network can improve the quality of the urban ecological environment through the design of open drainage channels and green ecological spaces. It can protect water ecosystems such as wetlands, rivers and lakes, provide a suitable growth environment and habitat, and promote the maintenance and restoration of biodiversity.

5. Extend the service life of the drainage system: The three-dimensional composite drainage network can prolong the service life of the drainage system through reasonable design and scientific management. It adopts high-quality drainage materials and structures, which have strong compression and corrosion resistance, reducing the risk of pipeline damage and leakage. At the same time, through regular maintenance and overhaul, problems in the drainage system can be found and repaired in time to maintain its good operating condition.

To sum up, the three-dimensional composite drainage network is a multi-level and multi-functional drainage system. Through the multi-level and multi-channel drainage system, it can provide fast and efficient drainage capacity and reduce the risk of urban waterlogging; Treatment of sewage by means of methods to reduce sewage discharge and water pollution; through reasonable design and scientific management, the service life of the drainage system can be extended. Therefore, the three-dimensional composite drainage network has broad application prospects and good social, economic and environmental benefits in urban drainage.