What are the requirements for cable conduits in saline-alkali soil?
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The company needs to build a factory in Xinjiang. For the power cables, I plan to use VV cables. The soil there is saline-alkaline; I’ve heard that galvanized pipes cannot be used in such soil. However, there is a section where the cables need to run across a road, and it’s not possible to use non-galvanized pipes in that area. Do any of you have any good suggestions? Also, is it okay to use VV cables without protective tubes in saline-alkaline soil, or are PE tubes still necessary?
Alkaline soil not only corrodes steel pipes but also damages the insulation covering of cables. It is recommended to use cable trays; if that’s not possible, fiberglass protective tubes should be used when laying the cables underground (though this has not been tried before). Concrete conduit tubes can also be used when crossing roads. . The above is an exploration
This question is quite profound. I haven’t dealt with the issue of laying cables in saline-alkali soil either. But what kind of pipe do you mean by PE pipe? Is it that red plastic tube? I’ve used it a few times; it’s said to be quite good. Both corrosion resistance and strength meet the general requirements. Maybe you’ll even need an underwater cable for this? What is the concept of saline-alkali land? Is there water? The above is merely a discussion. Leave your name in a strong post! ~!
It is better to use PVC pipes. Cast iron pipes are used for the sections along the route. If direct burial is possible, PVC-reinforced insulated direct-burial cables can be used.
Personally, I think choosing the cable is more important than choosing the protective tube. Currently, many materials can be used as cable protection pipes; for example, cement pipes and various plastic pipes are all suitable.