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ORIGINAL RESEARCH
Study on the Stability of Loess Landslides
Based on Vegetation Characteristics
and the Geo-Studio Model
1
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources,
Yangling, Shaanxi, China
2
Research Center of Soil and Water Conservation and Ecological Environment,
Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi, China
3
University of Chinese Academy of Sciences, Beijing, China
4
Shaanxi Provincial Land Engineering Construction Group Co., Ltd, Xi’an, Shaanxi, China
5
Technology Innovation Center for Land Engineering and Human Settlements, Shaanxi Land Engineering Construction
Group Co., Ltd, School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, China
Submission date: 2024-03-24
Final revision date: 2024-05-28
Acceptance date: 2024-06-12
Online publication date: 2024-12-16
Publication date: 2025-05-09
Corresponding author
Guobin Liu
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi, China
Pol. J. Environ. Stud. 2025;34(4):4143-4153
KEYWORDS
TOPICS
ABSTRACT
As the central accumulation area of the Loess Plateau in Shaanxi Province, China, Loess landslides
occur frequently, which seriously affect the safety of people’s lives and properties. The prediction
and early warning of landslides are the hot spots of geological disaster research, and the prediction
of the stability of Loess landslides can provide a reference basis for the prevention and management
of landslides. This study takes a typical Loess landslide site in Ganquan County, Yan’an City, as
the research object. By collecting soil samples from the landslide body for indoor simulation tests
and analyzing and testing the changes in the basic physical and mechanical properties of the soil
under different plant root densities and different precipitation conditions, the stability of shallow Loess
landslides on the Loess Plateau was simulated using Geo-Studio software. The analysis shows that
the stability coefficient of the natural root density of Zhangzi slope soil is 0.889, which belongs to
the unstable state, and under the condition of 1.5 times root density, its stability coefficient increases to
1.246, which belongs to the stable state, while at 2 times root density, its stability coefficient decreases
to 0.973, which belongs to unstable state, and the stability of its root-soil complex is 1.5 times root
density > 2.0 times root density > natural root density. Under different soil water content conditions,
the stability of the slope shows a trend of decreasing with increasing water content. Under the condition
of 10% soil water content, the stability coefficient of the landslide slope is 1.123, which is the basic stability state; under the condition of 20% soil water content, the stability coefficient drops to 0.886,
which is the unstable state; under the condition of 30% soil water content, the stability coefficient is
0.724, which indicates that precipitation has a great influence on the stability of Loess landslides.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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