Quantitative analysis on shear strength of different bio-embankments

2018 1st International Conference on Environment Prevention and Pollution Control Technology

生态环境科学

Zou, Mi^1,2 ; Li, Yanjun^1,2 ; Zheng, Jiebing^1,2 ; Tan, Xianlong^1,2

Chongqing Key Laboratory of Exogenic Mineralization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing

400042, China^1

Chongqing Research Center, State Key Laboratory of Coal Resources and Safe Mining, Chongqing

400042, China^2

关键词: Geological disaster;    Pioneer species;    Plant growth;    Single species;    Slope surfaces;    Soil and water conservation;    Soil shear strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/199/3/032054/pdf
DOI  :  10.1088/1755-1315/199/3/032054

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Biological measures on terrace embankment have been widely used, in order to repair the farmland damaged by geological disaster. In this paper, four different types of embankments (Exposed, Single Species, Herb, and Shrub-Herb) were built to determine plant growth condition and the difference of soil shear strength in the restoration of damaged farmland. The results showed that herbs covered slope surface as pioneer species and thrived on the embankment, had a better capacity in soil and water conservation in a short time. The shear strength of bio-embankments was significantly higher than that of the exposed embankment. Additionally, as the plants grew, the shear strength of bio-embankments increased gradually. Great disparity was found in the shear strength of different types of bio-embankments, and Shrub-Herb bio-embankment had the highest shear strength and enhanced ability to resist the landslide disaster.