It’s more troublesome to run pipes underground rather than above ground, so why go underground at all?
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It’s more troublesome to run pipes underground rather than above ground; then why use underground installation? Both laying and maintenance are more difficult in this case. What kind of pipes should be installed underground, and what kind should be installed above ground? Does it depend on factors such as the medium, diameter, pressure, and temperature?
Pipelines run underground; you can imagine how difficult it would be to transport crude oil through pipes that are mounted on pipe racks... The construction costs alone would be high. Digging the ground is a simpler method. Within production facilities, the pipelines underground are usually for cooling water or fire suppression water, so any leaks don’t cause any problems. If pipes are to be used on pipe racks, they are too large and heavy, and considering space and cost, it’s relatively expensive. The above are just my personal opinions
What is carried underground are mostly harmless materials, such as water pipes, which are used primarily for preventing freezing and ensuring safety. As for sewage pipes, they rely on gravity flow and are generally located underground
Now, wastewater isn’t allowed to flow underground; it has to be discharged through surface channels to prevent pollution and illegal discharge
If it’s not allowed to flow underground, how can sewage be collected? Is it collected by region and discharged using a pressure pump?
I really don’t understand sometimes what environmental managers are thinking. If someone really wants to discharge pollutants illegally, can they be detected easily? If this society is so full of distrust, many jobs will lead to class conflicts
For underground pipelines, I can think of two aspects for now: 1. Large-diameter liquid pipelines, which require support structures that can handle heavy loads; these support structures are numerous, resulting in high costs. 2. Due to spatial constraints or aesthetic reasons, pipes cannot be laid on the ground and must be buried instead.