玄武岩纤维对无粘性间断级配土管涌遏制效果试验研究
Experimental Study on the Effect of Basalt Fiber on the Piping Restraint of Cohesionless Gap-graded Soils
高唱 1陈亮2
作者信息
- 1. 河海大学 土木与交通学院,江苏 南京 210098;河海大学 岩土力学与堤坝教育部重点实验室,江苏 南京 210098
- 2. 河海大学 土木与交通学院,江苏 南京 210098;河海大学 岩土力学与堤坝教育部重点实验室,江苏 南京 210098;西藏农牧学院西藏土木水利电力工程技术研究中心重点实验室,西藏 林芝 860000
- 折叠
摘要
为研究玄武岩对间断级配无粘性土管涌遏制的效果,通过开展含玄武岩纤维间断级配土的管涌室内试验,研究了纤维含量、纤维长度和土体防治位置对于管涌发生发展的遏制效应.结果表明,玄武岩纤维的加入使得土体内部的迁移通道变得更加曲折和狭窄,从而遏制土体的管涌发展;当纤维含量较小时,全部土体防治比上覆土体防治的遏制效果好,随着纤维含量的增加,上覆土体防治的遏制效果与全部土体防治的遏制效果相接近;当纤维长度为 15 mm时,全部土体防治的遏制效果优于上覆土体防治的幅度最大,当纤维长度为 10 mm时,二者相差不大.
Abstract
To study the effect of basalt fiber on the piping restraint of cohesionless gap-graded soils,in-door tests were conducted on discontinuous graded soil containing basalt fibers to investigate the inhibi-tory effects of fiber content,fiber length,and soil prevention location on the occurrence and develop-ment of subsurface erosion.The results indicate that the addition of basalt fibers makes the migration channels inside the soil more tortuous and narrower,thereby suppressing the growth of soil piping;When the fiber content is low,the control effect of the entire soil is better than that of only the overlying soil.As the fiber content increases,the control effect of the overlying soil is close to that of the entire soil control;When the fiber length is 15 mm,the containment effect of all soil prevention is better than that of overlying soil prevention by the greatest extent.When the fiber length is 10 mm,the difference between the two is not significant.
关键词
管涌/玄武岩纤维/纤维含量/纤维长度/上覆土体防治Key words
piping/basalt fiber/fiber content/fiber length/overlying soil reinforcement引用本文复制引用
出版年
2024
NETL
NSTL
万方数据