IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleInvestigation on permeability of sands with different particle sizes
苏立君1,2; 张宜健1,3; 王铁行1
Corresponding Author苏立君
Source Publication岩土力学
Other Abstract




Permeability is an important property of sand soil. Factors that influence the permeability of sand include density, particle characteristics and properties of the fluid, among which the porosity and particle size are two important ones. However, previous investigations based on natural sand with mixed particles are not able to study the two factors independently. Therefore, constant head permeability tests are firstly carried out on sand soil with single particle size fractions to study the influence of grain size and porosity on the permeability, respectively. For sand soil with the same grain size fraction, the coefficient of permeability is found to increase linearly with the increase in porosity; for sand soil with the same porosity, the coefficient of permeability is found to increase linearly with the increase in porosity the square of average particle size. Based on this, the influence of gradation characteristics on the permeability of multi-particle-size sand soil is studied to extend the results from single particle size fraction to natural sand. The results show that the coefficient of permeability of multi-particle-size sand soil increased linearly with the increase the coefficient of curvature and coefficient of uniformity. The influences of different factors also differ from each other. The change in average particle size leads to change in order of magnitude of the coefficient of permeability. Finally, an empirical equation considering all the above factors is developed for engineering practice.


Keyword砂土 均值粒径 孔隙率 渗透系数
Indexed ByEI ; CSCD ; 北大中文核心
Accession numberAccession number:20142317792040
Citation statistics
Cited Times:23[CSCD]   [CSCD Record]
Document Type期刊论文
Affiliation1.西安建筑科技大学西部建筑科技国家重点实验室(筹),西安 710055
2.中国科学院山地灾害与地表过程重点实验室,中国科学院水利部成都山地灾害与环境研究所,四川 成都,610041
3.浙江精工钢结构集团有限公司,浙江绍兴 312030
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
苏立君,张宜健,王铁行. 不同粒径级砂土渗透特性试验研究[J]. 岩土力学,2014,35(5):1289-1294.
APA 苏立君,张宜健,&王铁行.(2014).不同粒径级砂土渗透特性试验研究.岩土力学,35(5),1289-1294.
MLA 苏立君,et al."不同粒径级砂土渗透特性试验研究".岩土力学 35.5(2014):1289-1294.
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