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Significance Analysis on Influence Factors of Coarse Particle Sulphate Salty Soil's Dissolve Settlement and Deformation
Author(s): 
Pages: 105-109
Year: Issue:  1
Journal: Journal of Gansu Sciences

Keyword:  Orthogonal experimentCoarse particleSalty soilDissolve settlementSignificance;
Abstract: 建立粗颗粒硫酸盐渍土溶陷变形量的计算公式,首先需要对影响溶陷的因素进行筛查和排序,目前虽已知含盐量、含水量、土体结构、上部荷载等因素对溶陷变形产生影响,但是哪些因素是主要因素,及随其水平增加如何变化等问题尚需深入研究.采用正交实验的方法,选用L16 (45)的正交实验表进行实验.结果发现,对粗颗粒硫酸盐渍土溶陷变形影响因素的主次排序为:含水量(因素B)、含盐量(因素A)和荷载(因素D)、孔隙比(因素C),并得出了各因素随水平变化的效应曲线.发现在其他因素相同的条件下,含水量5%所对应的溶滤变形系数最小,该含水量应为粗颗粒硫酸盐渍土的最优含水率.
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