Abstract:

The research based on silt ground disposal project of the first stage of Guangzhou Nanshataishan petrifaction storage area, the construction technology and idea of improving saturated soft clay with dynamic-static drainage consolidation method are described. Real time monitoring and inspecting are conducted during construction; improving effects are detected through pore water pressure, layer settlements and plate load tests etc. The results show that it is obvious to improve the silt with the new construction technology of low-energy and “few times and more cycles” dynamic compaction combined with precompression with soil load and the plastic vertical drain, the mechanical property and anti-deformation characteristics of silt are improved obviously. The whole consolidation effects are remarkable; physico-mechanical properties are better than expected.

Key words: dynamic-static drainage consolidation, silt foundation disposal, dynamic consolidation technology, plastic vertical drain, monitoring and inspecting