Seeking expert advice!
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For a project we are working on in Jiangsu, the custom-made tanks used for starch dissolution need to be placed at a depth of -2.000 meters. This morning, the client called and said that the groundwater level at the site is quite low; groundwater starts to emerge as soon as digging reaches a depth of just over 1 meter, and this problem is difficult to resolve. They asked us whether it would be possible to change the location where the tanks are installed. Our intention in designing this was that changing the location of the tank would be unfavorable for operation, and it could only solve the problem of water leakage. I’ve brought this issue here to ask for help from experts in civil engineering; I hope for some guidance! Looking forward eagerly! Thank you!
Why isn’t anyone replying to help? I need to reply to the client this afternoon; I’m begging for help from experts!
Whether it is a steel tank, a fiberglass-reinforced plastic tank, or one made of another material, it is necessary not only to address the issue of water leakage during construction, but also to find solutions to prevent the tank from floating due to stress after construction is completed; this problem of floating can also be quite serious.
For tanks made of 304 stainless steel, the concern is that water leaking out after the tank is installed might push it upward. Party A proposes pouring concrete at the bottom and around it, followed by waterproofing treatment. But could groundwater lift the entire concrete structure along with the tank?
After digging, build a cement wall; install a drainage system outside the wall, and then place the equipment inside the wall, in my opinion.
Due to the inability for natural drainage, a submersible pump is also needed to pump out water. We have discussed this issue with Party A, and considering the equipment investment and operating costs, they are unwilling to acquire any additional power equipment.
Provide the shear test parameters of the foundation soil, as well as the local maximum flood level, etc.; then the designer can carry out the buoyancy resistance design!
It is generally not located in low-lying areas; after digging one meter deep, concrete is poured there, and it won’t be pushed up by buoyancy； Don’t worry, I’ve encountered this before and have calculated it all. If a large amount of water is discharged, it is recommended to install a guide pipe at its bottom or set up a drainage system.
Party A has adopted a construction plan, which is in line with your view. Our design remains unchanged.