Method for treating coastal deep soft soil foundation by matching industrial slag with cement

The invention discloses a method for treating a coastal deep soft soil foundation by matching industrial slag with cement, which relates to the technical field of soft soil foundation treatment and comprises the following steps: selecting a corresponding detection point for a construction area, determining a sampling area according to the coverage range of the detection point, and sequentially sampling and analyzing a soil layer to obtain soil layer data; determining a first soil layer coefficient Oxs and a second soil layer coefficient Txs; when the two values are lower than the corresponding threshold values, determining the related sampling region as an abnormal region; constructing a soil layer digital twinborn model and a building construction model located above the soil layer, and judging whether the soil layer has a settlement risk or not; and constructing a construction scheme library, and determining whether the construction scheme is feasible or not according to the building model and the soil laye