摘要
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。
To establish a calculation formula of the dissolve settlement and deformation amount of coarse particle sulphate salty soil,we first need to screen and sort the influence factors of dissolve settlement.Currently,although the effects of salinity,water content,soil structure,upper load and other factors on dissolve settlement and deformation are known,questions including what are the main factors,and how will it change with the increased level still need further study.The test uses the orthogonal experiment method,and selects the orthogonal experiment table of L26(45)for experiment.It is found that the primary and secondary order of the influence factors of coarse particle sulphate salty soil's dissolve settlement and deformation is as follows:water content(factor B),salinity(factor A),load(factor D),void ratio(factor C).Besides,the effect curve about how each factor changes with levels is also achieved.It is found that in the case of same other factors,the 5% water content corresponds to the minimum dissolve settlement and deformation coefficient,and this water content should be the optimum moisture content of coarse particle sulphate salty soil.
出处
《甘肃科学学报》
2016年第1期105-109,共5页
Journal of Gansu Sciences
基金
甘肃省电力设计院与兰州理工大学合作研究项目"河西粗颗粒盐渍土地基盐胀病害与防治措施研究"(2011620111000485)
关键词
正交实验
粗颗粒
盐渍土
溶陷
显著性
Orthogonal experiment
Coarse particle
Salty soil
Dissolve settlement
Significance