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降雨入渗对寒旱环境根-土复合体斜坡稳定性的影响.

Authors :
罗元仓
张小荣
高英
Source :
Science Technology & Engineering. 2024, Vol. 24 Issue 24, p10500-10507. 8p.
Publication Year :
2024

Abstract

In order to study the effect of rainfall infiltration on the stability of root-soil complex slopes in cold and arid environments, based on the indoor root-soil complex straight shear test, the root system was simplified into a two-dimensional symmetric model consisting of the main root and one level of lateral roots with different inclinations to simulate the root-soil complex straight shear test, and the tensile force of lateral roots with different inclinations was obtained along with shear strength indexes of the specimens, and the stability of the slopes with different inclinations was analyzed based on the infinite slopes and the rainfall I-D model for the different inclination of the lateral roots through the based on the infinite slope and rainfall I-D model, the stability analysis of slopes with different inclination of lateral roots across the potential slip surface was carried out. The results show that with the increase of lateral root inclination angle, the tension of front lateral root increases, the main root and back lateral root tension changes insignificantly, and the tension of front lateral root gradually decreases when it is greater than 37.5°. Under different vertical pressures, the contribution of root configuration to the shear strength of the soil body is the front lateral root. The main root, and the back lateral root in the order of the front lateral root. The factor of safety of the vegetative soil and root-soil composite slopes decrease sharply with the increase of the depth of the slope potential slip surface, and compared with the the maximum increase in the slope safety factor of root-soil composite is about 27.01% compared with that of the vegetative soil. The research results can provide some data for the study of vegetation ecological slope protection and soil conservation in cold and arid environments. [ABSTRACT FROM AUTHOR]

Details

Language :
Chinese
ISSN :
16711815
Volume :
24
Issue :
24
Database :
Academic Search Index
Journal :
Science Technology & Engineering
Publication Type :
Academic Journal
Accession number :
179676094
Full Text :
https://doi.org/10.12404/j.issn.1671-1815.2306579