有纺土工织物覆土条件下的渗透特性试验研究

发布时间：2018-05-13 19:18

本文选题：多功能渗透仪 + 有纺土工织物　；参考：《岩土工程学报》2017年S1期

【摘要】：分别配制不同孔隙比的粉砂、标准砂和黏土试样,采用自主研制的一套多功能渗透试验装置,开展了一系列纯土和有纺土工织物覆土条件下的渗透试验,对比分析了这两种条件下渗透系数的差异,并探讨了有纺土工织物与土共同作用下的渗透机理。结果表明,有纺土工织物对于土体渗流略有一定的抑制作用,表现为覆土条件下的渗透系数略小于纯土的渗透系数,但是对于粉砂,当其孔隙比比较大、细砂颗粒的含量相对较多时,细砂颗粒则有可能在渗流作用下通过有纺土工织物孔隙而产生流失,使得覆粉砂条件下的渗透系数略大于纯粉砂的渗透系数。
[Abstract]:The silt, standard sand and clay samples with different void ratios were prepared, and a series of permeation tests were carried out under the conditions of pure soil and textile geotextile covered soil by a set of multifunctional permeation test equipment developed by ourselves. The difference of permeability coefficient under these two conditions is analyzed, and the permeation mechanism of textile geotextile and soil is discussed. The results show that the textile geotextile has a slight inhibition on soil seepage, which shows that the permeability coefficient is slightly smaller than that of pure soil under the condition of overlying soil, but for silt, when the porosity ratio is large, When the content of fine sand particles is relatively high, fine sand particles may be lost through the pores of woven geotextile under the action of percolation, which makes the permeability coefficient of silt covered with sand slightly larger than that of pure silt.
【作者单位】：河海大学岩土力学与堤坝工程教育部重点实验室;河海大学江苏省岩土工程技术工程研究中心;浙江大学海洋学院;青岛利业建设咨询有限公司;
【基金】：国家自然科学基金项目(51278171) 中央高校基本科研业务费专项资金项目(2015B06014)
【分类号】：TU41

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