soil pressure การใช้

The normal method of doing this in soft ground is to maintain the soil pressures during and after the tunnel construction.
The adhesive needs to be chosen based on its corrosion protection properties, adhesion strength, and resistance to shear forces imparted by pipe movement and the effects of soil pressures.
Fixed structures are mostly built as concrete gravity based structures ( CGS, also termed as caisson type ), where the loads bear down directly on the uppermost layers as soil pressure.
The adhesive has many functions; it adheres the installed sleeve to the steel at the coating cutback and mainline coating, it resists shear forces imparted by soil pressure after the pipeline is buried and provides long term corrosion protection to the steel.