Abstract: In the soft soil treatment, the blasting replacement of the soft soils has the characteristics of convenient in construction, low cost, short construction duration and significant soft soil improvement effects. This paper takes the blasting soil replacement method instead of the original sand drain and pipe pile method for the soft soil improvement for a road reclamation project in Ningde City. Based on the construction characteristics of the project, the physical and mechanical properties of the mucky soils and the original construction difficulties, this paper presents a new ground improvement method of using blasting replacement of the mucky soils and its design parameters. The potential hazards induced by the blasting and the safety measures are also discussed in the paper. Monitoring results show that the embankment stability is satisfactory, the monthly post construction settlement is less than 6mm. The application of the blasting replacement method in the soft soil improvement is feasible.

Key words: Blasting Replacement, Reclamation Project, Soft Soil Improvement, Safety Measures