雨林乔木直根根土复合体的抗剪强度试验研究

发布时间：2018-05-26 03:41

本文选题：生态护坡 + 植被　；参考：《岩石力学与工程学报》2017年S1期

【摘要】：为探索不同类型的雨林乔木直根根土复合体的抗剪强度,采用自行设计加工的大型根土复合体直剪仪对不同根径、根数以及根系分布条件下的根土复合体进行直剪试验。通过电动汽车千斤顶,对上剪切盒匀速缓慢施加推力,试验过程中实时记录千斤顶推力的大小、直根相对剪切盒的位移及剪切盒位移等。试验结果显示:土中根系的分布类型、根径大小、根数和剪切深度会影响到根土复合体的抗剪强度及相应的强度指标;植被根系对土体的加筋作用具有积极作用,为后续更加深入地研究乔木根系对小型边坡的治理奠定试验基础。
[Abstract]:In order to explore the shear strength of different types of direct root soil complex of tree in rainforest, the direct shear test of root soil complex under different root diameter, root number and root distribution was carried out by using a large scale root soil complex directly shear apparatus designed and processed by ourselves. Through the Jack of electric vehicle, the thrust of the upper shear box is exerted slowly and uniformly. The size of the thrust of the Jack, the displacement of the straight root relative to the shearing box and the displacement of the shearing box are recorded in real time during the test. The results show that the distribution of root system, root diameter, root number and shearing depth will affect the shear strength and the corresponding strength index of the root soil complex, and the vegetation root system has a positive effect on the reinforcement of soil. It lays the experimental foundation for further research on the treatment of small slope by Arbor root system.
【作者单位】：海南大学土木建筑工程学院;中国科学院西北生态环境资源研究院;
【基金】：“十二五”国家科技支撑计划课题(2013BAK05B03) 海南省社会发展科技专项项目(SF201456) 海南省科协青年科技英才创新计划项目(201506)~~
【分类号】：TU411.7

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