工程地质学报2025，Vol.33Issue(3)：875-885,11.DOI:10.13544/j.cnki.jeg.2023-0098
聚丙烯纤维加筋黄土抗渗性能试验研究
EXPERIMENTAL STUDY ON ANTI-SEEPAGE OF POLYPROPYLENE FI-BER-REINFORCED LOESS
摘要
Abstract
The fiber infiltration effect will accelerate the water infiltration and cause the weakening of soil imperme-ability,which is not conducive to the long-term protection of loess slopes under concentrated rainfall conditions.To comprehensively evaluate the influence law of fiber loess,ber length,and dry density on the permeability coeffi-cient was studied,the vertical infiltration law and model of fiber soil column under different compaction conditions were revealed,and the moisture monitoring test was carried out in the field combined with the fiber loess treatment thickness obtained from the test to explore the moisture variation characteristics and impermeability effect of the shallow soil of fiber protection slope.The results show that the infiltration coefficient of fiber loess decreases with decreasing fiber admixture,increasing length,and dry density,and the sensitivity of variation is from strong to weak in order of dry density,fiber admixture,and fiber length,among which dry density as the main controlling factor can play a suppressive role in fiber infiltration effect;adequate compaction is a necessary condition to ensure that fiber loess maintains good infiltration resistance.Compared with the fiber soil column with 80％compaction,the fiber soil column with 90％compaction has 36.36％more stable infiltration time,50.00％less initial infiltration rate,83.33％less stable infiltration rate,and about 15％～50％more delayed initial moisture response time.When the water-soil mass ratio is 0.37,the slope platform and the thickness of fiber loess treatment on the slope surface is 15 and 10 cm,the volumetric water content of each measurement point inside the slope remains stable,and the co-efficient of variation is 0.78％～1.36％,which is only 1/9 of that of the unprotected slope.关键词
黄土边坡/边坡防护/聚丙烯纤维/纤维加筋土/抗渗性能Key words
Loess slope/Slope protection/Polypropylene fiber/Fiber-reinforced soil/Anti-seepage performance分类
建筑与水利引用本文复制引用
贾卓龙,梁哲瑞,晏长根,卢浩,徐志平,石玉玲,郜世泰..聚丙烯纤维加筋黄土抗渗性能试验研究[J].工程地质学报,2025,33(3):875-885,11.基金项目
国家自然科学基金项目(资助号:42077265).This research is supported by the National Nature Science Foundation of China(Grant No.42077265). （资助号:42077265）
