The main methods for intercepting foundation seepage in foundation treatment are:
1. The cushion replacement method is suitable for the treatment of shallow soft foundation and uneven foundation. Improve the bearing capacity of foundation, reduce the settlement, accelerate the drainage consolidation of soft soil layer, prevent frost heave and eliminate the expansion and contraction of expansive soil.
2. The dynamic compaction method is suitable for treating gravel soil, sandy soil, silty soil and cohesive soil with low saturation, collapsible loess, miscellaneous fill and plain fill. Dynamic compaction replacement method is suitable for projects with poor deformation control on high saturation silt, soft-fluid plastic cohesive soil and other foundations, and its applicability and treatment effect must be determined through field tests before design.
in-hole deep dynamic compaction method
In-hole deep dynamic compaction method (DDC) is a patented new technology for foundation treatment (patent number ZL92114452.), which is to first form a hole in the foundation, put a dynamic compaction hammer into the hole, and then do dynamic compaction while adding materials or layering fillers. Deep dynamic compaction in hole (DDC) technology won the highest prize-Eureka Gold Award at the 52nd Eureka World Invention Expo, which is the only gold award for China's foundation treatment technology in the world so far.