Seismic stability analysis of shallow overburden slopes with vegetation protection

IF 2.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Earth Sciences Pub Date : 2024-08-12 DOI:10.1007/s12665-024-11782-0

Jiayong Niu, Jianjing Zhang, Shijie Yan, Xueliang Jiang, Feifei Wang

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Abstract

Vegetation is an effective and environmental-friendly approach to improve slope stability. However, due to the lack of reasonable calculation methods for vegetated slopes, the analysis theory of ecological slope protection lags behind the engineering application. Based on the shallow translational failure model considering the boundary effects, the dimensionless seismic stability number of shallow overburden slopes with or without vegetation protection was deduced by using the upper limit method of limit analysis. A series of stability charts for slopes with or without vegetation protection under seismic excitations with different amplitudes were provided. The results show that the underestimation degree of the safety factor calculated from the infinite slope model increases gradually with the increase of the thickness ratio of the shallow overburden. Compared with the slope without vegetation protection, the seismic stability number of the slope with vegetation protection is nonlinear. The proposed stability charts show good performance for rapidly obtaining the safety factor with calculation errors of less than 9%, which is useful in assessing the safety of the shallow overburden slopes with vegetation protection in the preliminary design.

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有植被保护的浅覆盖层斜坡的地震稳定性分析

植被是改善边坡稳定性的一种有效且环保的方法。然而，由于缺乏植被边坡的合理计算方法，生态护坡的分析理论滞后于工程应用。基于考虑边界效应的浅层平移破坏模型，采用极限分析的上限法推导了有无植被防护的浅层堆积物边坡的无量纲地震稳定数。提供了一系列有无植被保护斜坡在不同振幅地震激励下的稳定性图表。结果表明，随着浅覆盖层厚度比的增加，由无限坡模型计算出的安全系数的低估程度逐渐增加。与无植被保护的边坡相比，有植被保护的边坡的地震稳定系数是非线性的。所提出的稳定图在快速获得安全系数方面表现良好，计算误差小于 9%，有助于在初步设计中评估有植被保护的浅覆盖层边坡的安全性。

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来源期刊

Environmental Earth Sciences 环境科学-地球科学综合

CiteScore

5.10

自引率

3.60%

发文量

494

审稿时长

8.3 months

期刊介绍： Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth: Water and soil contamination caused by waste management and disposal practices Environmental problems associated with transportation by land, air, or water Geological processes that may impact biosystems or humans Man-made or naturally occurring geological or hydrological hazards Environmental problems associated with the recovery of materials from the earth Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials Management of environmental data and information in data banks and information systems Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.