围海造陆吹填区内吹填土加固前为泥浆状态,含水量高达80％以上,初始孔隙比较大.通过室内试验得出吹填泥孔隙比随固结应力的变化关系以及渗透系数与空隙比的关系,最终建立渗透系数随固结应力的变化关系；考虑加固过程中渗透系数随加固时间是变化的,对巴隆固结理论进行改进；利用改进后的固结理论对吹填土真空预压模型试验进行计算,计算结果与试验基本吻合,表明采用本文提出的变参数固结理论计算能取得很好的计算效果.%At beginning,dredger fill in reclaimed area has a slurry state and has a high water content and big initial void ratio.A laboratory test is carried out for the consolidation behavior.The relationship between void ratio and consolidation stress is obtained from the indoor test.The relationship of permeability coefficient and void ratio is proposed.At last,the permeability coefficient and consolidation stress relationship is put forward.The Barron's consolidation theory is improved by considering the permeability coefficient variable with time.A calculation is conducted to a vacuum preloading model test.The result is in accord with the test data.It shows that the improved consolidation theory is suitable to the vacuum preloading of dredgerfill.
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