Planning and selection of pipes in the drainage network!
Selection of reinforced concrete pipe interfaces. The nozzle methods of concrete pipes used for drainage are flat pipe, groove pipe and socket pipe. Depending on the shape of the nozzle, the method of connection is different. Pipe interfaces are generally divided into three types: flexible interfaces, rigid interfaces, and semi-flexible interfaces.
With the continuous and rapid development of China's national economy, the planning has also been continuously expanded. Due to some inherent shortcomings of traditional drainage pipes, it has been difficult to meet the needs of urban development. How to properly select drainage pipes is of great significance to ensure the quality of the project, shorten the construction period, reduce the cost of the entire project, and ensure the smooth progress of the entire project.
The concrete pipe professional explained the following analysis with us:
Issues to be aware of when planning and selecting drainage pipes
(1) Selection of reinforced concrete pipe interface. The nozzle methods of concrete pipes used for drainage are flat pipe, groove pipe and socket pipe. Depending on the shape of the nozzle, the method of connection is different. Pipe interfaces are generally divided into three types: flexible interfaces, rigid interfaces, and semi-flexible interfaces. The rubber ring interface, asphalt paste, and asbestos asphalt coil interface are all flexible interfaces. Rigid interfaces include cement mortar and steel mesh cement mortar tape interface, while asbestos cement interface is semi-flexible interface. Flexible or semi-flexible joints should be used for sewage pipes with higher interface requirements and tighter water tightness.
(2) Pipeline elevation control. Pipeline elevation control should be comprehensively considered from multiple aspects: in order to ensure the drainage of rainwater and sewage in the area served by the pipeline, the pipeline must have a sufficient burial depth; as the burial depth increases, the trenching depth increases, and the construction difficulty also varies. The increase, especially in the more fragile soil, will definitely increase the cost of the pipeline network. At the same time, the municipal pipelines under urban roads are confusing. In order to make the pipelines basically staggered from each other, the elevation of each pipeline should be reasonably controlled. Generally speaking, the order of pipelines from top to bottom is power pipe (ditch), telecommunication pipe (ditch), gas pipe, water pipe, heat pipe, rain pipe, sewage pipe.
(3) Ring stiffness selection. Ring stiffness is a comprehensive parameter for the ability of buried drain pipes to resist external pressure loads. To ensure the safety of plastic buried drain pipes under external pressure loads, the selection of ring stiffness is one of the key points in planning. The choice of ring stiffness depends not only on the condition of the soil around the pipeline (backfill data) after laying.
In short, giving drainage pipeline engineering planning is a process combining practical experience and initiative. While meeting the requirements of the standards and paying attention to the key points of planning and control, according to the actual situation, according to local conditions, according to the actual conditions, often sufficient market surveys and economic and technological comparisons, and preferential use of new pipe materials, as far as possible to achieve good quality, economic and reasonable Convenient construction.