Buried or trench-mounted installation
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RT, during the pipeline layout process, it was found that water pipes can be buried underground, but some pipelines need to be laid in ducts. I’m not sure how to distinguish between the two What types of pipes or in what situations are they needed to be laid in pipe trenches?
It generally involves the laying of pipeline trenches that require maintenance. The external anti-corrosion treatment for pipes laid in trenches is not as complicated as that for pipes buried directly in the ground. Currently, some factories are installing utility tunnels, mainly because there is enough space, which facilitates maintenance. It is very rare these days to dig a trench just for one pipe. Municipal pipelines can even be buried directly, including heating pipes.
Reply to 2# mossss: I have a question – does the circulating water pipe inside the unit also need to be laid in a trench, while it can be buried underground outside the unit?
Pipelines for transporting non-toxic, non-corrosive media with low viscosity that do not easily coagulate, at normal temperature and pressure, can be buried directly (such as fire water, water supply and drainage pipes, sewage pipes, etc.)； Additionally, depending on the number of pipes and the frequency of maintenance, they are installed in trenches that are accessible, partially accessible, or inaccessible
What was said on the 2nd floor is very good. I also think it is mainly considered from the perspectives of maintenance and economics. 1. It is easier to maintain trench conduits than those buried underground. For maintenance work underground, it is necessary to dig the soil; in a pipe trench, simply opening the cover plate is sufficient. (But to prevent water leakage, the cover plates are usually sealed with cement as well.) 2. Economically speaking, if there are only 1-2 pipes, it would be a waste to dig ducts. Burying it is more convenient and cheaper. However, if this pipeline has special requirements, such as being radioactive, it is better to use a separate trench. 3. Another one is the integrated utility tunnel. The cost is relatively high. A utility tunnel is one that people can enter; it contains not only pipes but also cable trays and other elements.
This post was last edited by mossss on 2011-10-30 at 10:10. Reply to 3# zbl940: By laying the ducts inside the factory building, maintenance can be carried out without having to cut into the floor of the building, thus minimizing the impact on production. It can be buried directly outside the factory building; proper anti-corrosion measures and an appropriate burial depth are sufficient.
Generally, buried pipes are easy to install but difficult to maintain. Trench construction is time-consuming, but it facilitates maintenance. Generally, trenching is considered when there are many pipes.
No one has seen the trench diagram yet; which classmate can show it?~