土木与环境工程学报（中英文）2026，Vol.48Issue(2)：19-29,11.DOI:10.11835/j.issn.2096-6717.2024.012
微生物结合纤维加筋黄土坡面抗侵蚀性能试验研究
Anti-erosion performance of microbial combined fiber reinforced loess slope
摘要
Abstract
Rainfall erosion seriously threatens the stability of soil slopes and even induces failure.In this study,jute fiber and the microbial-induced calcium carbonate precipitation technique were combined to carry out ecological reinforcement of loess slopes.A simulated rainfall test was used to analyze the improvement effect and influencing factors of slope erosion resistance.Scanning electron microscope and energy dispersive X-ray spectrometer were used to analyze the mechanism of mitigating rainfall erosion on loess slope from a micro perspective,and to explore the feasible means of mitigating rainfall erosion on loess slope.The results show that:the addition of jute fiber can help to improve the rainfall erosion resistance of microbial-mineralized loess,especially for the medium and high content of medium and long size fibers;the fiber-reinforced loess treated by biomineralization can significantly resist the erosion of weak rainfall(6 mm/h)and short-term heavy rainfall(45 mm/h);under heavy rainfall conditions,the erosion resistance increases with the increase of fiber content,but the increase range gradually decreases,and the highest erosion resistance increases to 64.2%;with the increase of fiber length and fiber content,the thickness difference between C2L5 and C8L25 is 2.86 times.There are two cementation modes in the surface layer of fiber-reinforced microbial mineralized loess:the"intergranular filling"mode formed by the precipitation of calcium carbonate crystals in intergranular pores,and the"wrapped cementation"mode of calcium carbonate formed by wrapping soil particles through fiber connection.关键词
微生物诱导碳酸钙沉淀/纤维加筋微生物矿化/黄土边坡/降雨侵蚀/胶结模式Key words
microbial induced calcium carbonate precipitation/fiber reinforced microbial mineralization/loess slope/rainfall erosion/bonding mode分类
建筑与水利引用本文复制引用
王保权,谢嘉恒,郭亮,刘丰威,王嘉..微生物结合纤维加筋黄土坡面抗侵蚀性能试验研究[J].土木与环境工程学报（中英文）,2026,48(2):19-29,11.基金项目
四川省自然科学基金(2022NSFSC0183) （2022NSFSC0183）
四川省矿产资源研究中心科研项目(SCKCZY2022-YB012) （SCKCZY2022-YB012）
国家级大学生创新创业训练计划(202210615008、202210615033) Natural Science Foundation of Sichuan Province(No.2022NSFSC0183) （202210615008、202210615033）
Scientific Research Project of Sichuan Mineral Resources Research Center(No.SCKCZY2022-YB012) （No.SCKCZY2022-YB012）
National Innovation and Entrepreneurship Training Program for College Students(Nos.202210615008,202210615033) （Nos.202210615008,202210615033）
