Abstract:Recently,in some soft soil reinforcement engineering,the strengthen of flow mud on the ground soil surface was
low through vacuum preloading,even part of the soil was still in the flow state and did not achieve the desired reinforcement
effect. This paper analyzes reason by a vacuum preloading model experiment and projects of Qingdao. The effect of flow mud
analysis showed the strain consolidation degree reached 85 %,the strengthen was still low for high clay content and clay on
larger adsorption of pore water,so reinforcement effect was poor by vacuum preloading when plastic drain spacing was greater
than 60 cm.
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