枯枝碎屑对吹填土的脱盐效果

Desalting Effect of Wood Chips on Dredger Fill

[目的]研究枯枝碎屑对吹填土脱盐及理化性质的影响。[方法]采用室内土注淋洗模拟脱盐试验,设不添加枯枝碎屑(CK)、添加土柱体积5%的枯枝碎屑、添加土柱体积10%的枯枝碎屑,研究枯枝碎屑的脱盐效果。[结果]添加枯枝碎屑有利于加快吹填土盐峰形成、下移和消失,且随着枯枝碎屑添加量的增加而加快,脱盐碱化特征明显高于CK。[结论]枯枝碎屑可应用于吹填土脱盐。

[Objective ] To study effects of wood chips on desalination of dredger fill and physicochemical properties. [ Method] The desalting experiment was simulated by indoor soil column leaching. Setting up three treatments including blank control, adding soil column volume 5% wood chips, adding soil column volume 10% wood chips, the desalination effect of dredger fill was studied. [Result] The results showed that the addition of wood chips was beneficial to accelerate the formation, descent and disappearance of the salt peaks, but their alkalization char- acteristics were significantly higher than those without adding wood chips treatment. [ Conclusion ] Wood chips can be applied in desalination of dredger fill.