土的天然含水率对强夯法处理至关重要，天然含水量低于10%的土，颗粒间摩擦力大，细土颗粒很难被填充，且表层坚硬，夯击时表层土容易松动，夯击能量消耗在表层土上，深部土层不易夯实，消除湿陷性黄土的有效深度小，夯填质量达不到设计效果。
Natural water content of soil is very important for dynamic compaction treatment. When natural water content is less than 10%, the friction between particles is great, fine soil particles are difficult to be filled, and the surface layer is hard. The surface soil is easy to loosen during compaction. The energy of compaction is consumed on the surface soil. The deep soil layer is not easy to be compacted, and the effective depth of collapsible loess is small. The compaction quality can not reach the design effect.
当上部荷载通过表层土传递到深部土层时，便会由于深部土层压缩而产生固结沉降，对上部建筑物造成破坏。
When the upper load passes through the surface soil to the deep soil layer, it will consolidate and settle due to the compression of the deep soil layer, causing damage to the upper buildings.