1. A few settlements which do not affect other structures may be treated without treatment or only on the surface. For example, some supplements may be used on asphalt pavement to avoid water accumulation;
2. If the foundation of other structures is damaged due to voids, pumped cement slurry can be used for filling.
3. If the layout is damaged, the bad filler should be excavated, the data with good stability should be replaced, and the damaged structure should be repaired after compaction.
