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The environmental adaptability of underground pipes refers to their ability to withstand and function effectively in various natural conditions, particularly within the soil they are buried in. In regions with favorable soil conditions, such as the eastern parts of China, FRP (Fiberglass Reinforced Plastic) sand pipes have proven to be highly suitable. This has been demonstrated through real-world applications, with many FRP sand pipes installed in areas like Daqing, Beijing, Shishi, and Huludao, where they have performed well for many years.
Collapsible loess is a specific type of soil that experiences significant settlement when exposed to water. The soil’s internal structure collapses quickly, leading to potential damage to underground pipelines. If a pipeline is laid in such areas, proper foundation treatment is essential. Common methods include tamping, soil cushion compaction, lime soil stabilization, and concrete paving. Each method offers different levels of effectiveness in controlling collapsible settlement, and the choice depends on the degree of collapsibility in the loess and the weight of the pipe.
Lighter pipes can often be managed with simpler and more cost-effective techniques since their reduced weight minimizes additional stress on the soil. When the foundation treatment is comparable, using FRP sand pipes adds an extra layer of stability and safety. This makes them especially advantageous in challenging environments.
FRP sand pipes also offer significant economic benefits. They are lightweight, have a smooth inner surface, resist corrosion, and have a low friction coefficient. These features make them easier to transport, install, and maintain. While the initial unit price may be higher than other types of pipes, the overall cost—considering transportation, installation, and long-term operation—makes them a cost-effective solution.
Another key advantage of FRP sand pipes is their anti-corrosion performance. Traditional materials like steel, cast iron, or cement pipes require extensive internal and external anti-corrosion treatments, which add to both time and cost. In contrast, FRP sand pipes are manufactured with built-in anti-corrosion properties. Their inner surfaces remain smooth and clean during operation, ensuring consistent flow efficiency and eliminating the need for ongoing maintenance. This not only improves operational reliability but also enhances safety and reduces long-term costs.