The mechanism of the plant roots' soil-reinforcement based on generalized equivalent confining pressure
文献类型：期刊论文
| 作者 | Guo Ping1,3; Xia Zhenyao1,3; Liu Qi2; Xiao Hai1,3; Gao Feng3; Zhang Lun3; Li Mingyi1,3; Yang Yueshu1,3; Xu Wennian1,3 |
| 刊名 | PEERJ
 |
| 出版日期 | 2020 |
| 卷号 | 8页码:e10064 |
| ISSN号 | 2167-8359 |
| 关键词 | Soil-root composite Shear strength indexes Generalized equivalent confining pressure Drainage condition Root distribution patterns |
| DOI | 10.7717/peerj.10064 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Background. To quantitatively evaluate the contribution of plant roots to soil shear strength, the generalized equivalent confining pressure (GECP), which is the difference in confining pressure between the reinforced and un-reinforced soil specimens at the same shear strength, was proposed and considered in terms of the function of plant roots in soil reinforcement. Methods. In this paper, silt loam soil was selected as the test soil, and the roots of Indigofera amblyantha were chosen as the reinforcing material. Different drainage conditions (consolidation drained (CD), consolidation undrained (CU), and unconsolidated undrained (UU)) were used to analyse the influences of different root distribution patterns (horizontal root (HR), vertical root (VR), and complex root (CR)) and root contents (0.25%, 0.50%, and 0.75%) on the shear strength of soil-root composites. Results. The cohesion (c) values of the soil-root composites varied under different drainage conditions and root contents, while the internal friction angle (phi) values remain basically stable under different drainage conditions. Under the same root content and drainage conditions, the shear strength indexes ranked in order of lower to higher were HR, VR and CR. The GECP of the soil-root composites with a 0.75% root content was 1.5-2.0 times that with a 0.50% root content and more than 5 times that with a 0.25% root content under the CD and CU conditions. The GECP in reinforced soil followed the sequence of CD > CU > UU. The GECP of the plant roots increased as confining pressure increased under CD and CU conditions while showed a complex change to the confining pressure under the UU condition. Conclusion. It was concluded that the evaluation of plant root reinforcing soil based on GECP can be used to measure effectively the influences of roots on soil under different drainage conditions and root distribution patterns. |
| 语种 | 英语 |
| WOS记录号 | WOS:000573344900002 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46857]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Xiao Hai |
| 作者单位 | 1.Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, China; 2.Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, CAS, Chengdu, China 3.Key Laboratory of Geological Hazards on Three Gorges Reservoir Area (China Three Gorges University), Ministry of Education, Yichang, China; |
| 推荐引用方式 GB/T 7714 | Guo Ping,Xia Zhenyao,Liu Qi,et al. The mechanism of the plant roots' soil-reinforcement based on generalized equivalent confining pressure[J]. PEERJ,2020,8:e10064. |
| APA | Guo Ping.,Xia Zhenyao.,Liu Qi.,Xiao Hai.,Gao Feng.,...&Xu Wennian.(2020).The mechanism of the plant roots' soil-reinforcement based on generalized equivalent confining pressure.PEERJ,8,e10064. |
| MLA | Guo Ping,et al."The mechanism of the plant roots' soil-reinforcement based on generalized equivalent confining pressure".PEERJ 8(2020):e10064. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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