有纺土工织物覆土条件下的渗透特性试验研究

吴纲; 雷国辉; 姜红

doi:10.11779/CJGE2017S1032

有纺土工织物覆土条件下的渗透特性试验研究 English Version

吴纲^1,2,3,
雷国辉^1,2, ,,
姜红^1,2,4

1. 河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京 210098;
2. 河海大学江苏省岩土工程技术工程研究中心,江苏南京 210098;
3. 浙江大学海洋学院,浙江杭州 310058;
4. 青岛利业建设咨询有限公司,山东青岛 266071

基金项目: 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）

详细信息

作者简介:
吴纲(1990-),男,江苏无锡人,博士研究生,从事软土地基处理技术研究。E-mail:605615170@qq.com。

通讯作者:
雷国辉，E-mail：leiguohui@hhu.edu.cn

计量
- 文章访问数: 275
- HTML全文浏览量: 6
- PDF下载量: 140
出版历程
- 收稿日期: 2016-12-01
- 发布日期: 2017-11-19

Experimental study on permeability of woven geotextile covered with soil

WU Gang^1,2,3,
LEI Guo-hui^1,2, ,,
JIANG Hong^1,2,4

1. Key Laboratory of Geomechanics and Embankment Engineering of the Ministry of Education, Hohai University, Nanjing 210098, China;
2. Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing 210098, China;
3. Ocean College, Zhejiang University, Hangzhou 310058, China;
4. Qingdao Liye Construction Profession Co., Ltd., Qingdao 266071, China

摘要

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。
- 多功能渗透仪 /
- 有纺土工织物 /
- 渗透系数 /
- 孔隙比 /
- 渗透机理
Abstract: The specimens of silty sand, standard sand and clay with different void ratios are prepared. By utilizing a multifunctional permeability test apparatus, a series of permeability tests are carried out under the conditions of pure soils and woven geotextiles covered with soils. The difference in hydraulic conductivity under these two conditions is analyzed by comparisons. The mechanism of seepage under the interaction between geotextile and soil is discussed. The results show that the woven geotextile has a slight suppression effect on the seepage of soil, resulting in the case that the hydraulic conductivity of the geotextile covered with soil is a bit lower than that of the soil. However, for the silty sand with a relatively large void ratio and a relatively high content of fine sands, loss of fine sand grains owing to passing through the voids of woven geotextile may take place under the actions of seepage. This will result in the case that the hydraulic conductivity of the geotextile covered with silty sand is a bit higher than that of the silty sand.
- multifunctional permeameter /
- woven geotextile /
- hydraulic conductivity /
- void ratio /
- seepage mechanism

HTML全文

参考文献(8)

[1]	KOERNER R M, KOERNER G R. A data base, statistics and recommendations regarding 171 failed geosynthetic reinforced mechanically stabilized earth (MSE) walls[J]. Geotextiles and Geomembranes, 2013, 40: 20-27.
[2]	KOERNER R M, KOERNER G R. Lessons learned from geotextile filter failures under challenging field conditions[J]. Geotextiles and Geomembranes, 2015, 43(3): 272-281.
[3]	雷国辉, 吴纲, 姜红, 等. 土工织物双向可拉伸多功能渗透试验装置[J]. 岩土工程学报, 2016, 38(增刊1): 119-124. (LEI Guo-hui, WU Gang, JIANG Hong, et al. Multifunctional permeability test apparatus for geotextiles under biaxial tension[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(S1): 119-124. (in Chinese))
[4]	姜红, 雷国辉, 杨明昌. 土工织物垂直渗透特性的研究进展[J]. 水利水电科技进展, 2014, 34(3): 89-94. (JIANG Hong, LEI Guo-hui, YANG Ming-chang. Research progress of vertical infiltration characteristics of geotextiles[J]. Advances in Science and Technology of Water Resources, 2014, 34(3): 89-94. (in Chinese))
[5]	KOERNER G R, KOERNER R M. Geotextile tube assessment using a hanging bag test[J]. Geotextiles and Geomembranes, 2006, 24(2): 129-137.
[6]	HUANG C C, LUO S Y. Dewatering of reservoir sediment slurry using woven geotextiles. part 1: experimental results[J]. Geosynthetics International, 2007, 14(5): 253-263.
[7]	WEGGEL J R, DORTCH J, MERIDA V Z. Experiments with water and slurries in hanging geotextile bags: a further appraisal[J]. Geotextiles and Geomembranes, 2011, 29(5): 502-513.
[8]	WEGGEL J R, DORTCH J. A model for filter cake formation on geotextiles: experiments[J]. Geotextiles and Geomembranes, 2012, 31: 62-68.