Abstract: This paper presents a case study of soil improvement and testing project for the tobacco leaf re-roasting and storage sites of Hongta Group in Yuxi City. The subsurface soil/rock conditions and their geotechnical properties are evaluated. Based on the analysis, the deep dynamic compaction was selected as the soil improvement method. It is concluded that the dynamic compaction with standard backfill material can significantly improve the subsurface soils. It is also suggested that the dynamic penetration test as the quality assurance tool is appropriate and the testing locations should be representative.

Key words: Hongta Yuxi, Soil Improvement, Mitigation Measures, Deep Dynamic Compaction, Result Evaluation