Sustainable Assessment of Vetiver-Based Nature-Based Solutions for Landslide Hazard Mitigation Under Groundwater, Surcharge, and Pseudo-Static Seismic Conditions
地下水、上載荷重、擬似静的耐震条件下におけるベチバーを用いた自然解釈型地滑りハザード軽減策の持続可能性評価 (AI 翻訳)
Jose Luis Chavez Torres, Kunyong Zhang, Jhon Patricio Rodriguez, Alejandra Nathaly Flores Granda
🤖 gxceed AI 要約
日本語
エクアドル南部の斜面安定性に対するベチバー草の補強効果を、地盤特性、直接せん断試験、有限要素法、極限平衡解析、統計解析を統合して評価。3種類の細粒土で、ベチバーにより見かけの粘着力が8.92〜27.65%、内部摩擦角が6.90〜17.43%向上。数値解析では、土質、斜面形状、荷重条件、根系層と破壊メカニズムの相互作用が安定性を支配。ベチバーは普遍的対策ではなく、サイト固有の補完的対策とすべき。
English
This study evaluates the mechanical effect of Vetiver grass on slope stability in Loja, southern Ecuador, using an integrated framework of geotechnical characterization, direct shear testing, finite element modeling, limit equilibrium analysis, and statistical evaluation. Vetiver reinforcement increased apparent cohesion by 8.92-27.65% and internal friction angle by 6.90-17.43%, with the highest cohesion gain in ML soil. Numerical results showed that stabilization is controlled by soil type, slope geometry, loading condition, and root-reinforced layer interaction. Vetiver should be considered a complementary, site-specific, and risk-informed mitigation measure, not a universal solution.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では、気候変動に伴う豪雨や地震による斜面災害リスクが高まっており、自然解釈型対策（NbS）への関心が高まっています。本論文は、ベチバーを用いた斜面安定化の定量的評価を提供し、日本のインフラ維持管理や防災対策におけるNbS導入の参考になります。
In the global GX context
Globally, nature-based solutions (NbS) are gaining attention for climate adaptation and disaster risk reduction. This paper provides a quantitative framework for evaluating the effectiveness of Vetiver grass in slope stabilization under multi-hazard conditions, contributing to the evidence base for NbS in infrastructure resilience and sustainable land management.
👥 読者別の含意
🔬研究者:Provides a comprehensive methodology for assessing nature-based slope stabilization under multi-hazard conditions, useful for researchers in geotechnical engineering and disaster risk reduction.
🏢実務担当者:Offers quantitative evidence on the effectiveness of Vetiver for slope stabilization, which can inform engineering design and risk management in infrastructure projects.
🏛政策担当者:Highlights the potential of nature-based solutions for landslide mitigation, supporting policy development for sustainable infrastructure and climate adaptation.
📄 Abstract（原文）
Sustainable landslide hazard mitigation requires scenario-based assessment of nature-based solutions under realistic hydromechanical and multi-hazard conditions. This study evaluates the mechanical effect of Vetiver grass (Chrysopogon zizanioides) on slope stability in Loja, southern Ecuador, through an integrated framework combining geotechnical characterization, direct shear testing, finite element modelling, limit equilibrium analysis, and targeted statistical evaluation. Three fine-grained soils, classified as CH, MH, and ML, were analysed under baseline groundwater conditions, groundwater with an 8 kN/m2 surcharge, and groundwater with surcharge plus pseudo-static seismic loading. Vetiver reinforcement increased apparent cohesion by 8.92–27.65% and internal friction angle by 6.90–17.43%, with the highest cohesion gain in ML soil. Numerical results showed that stabilization was controlled by soil type, slope geometry, loading condition, and interaction between the 2.0 m root-reinforced layer and the governing failure mechanism. Under surcharge loading, FS for ML at 0.5H:1V increased from 1.056 to 1.450. Under combined loading, FS increased from 0.217 to 1.440 for ML at 1H:1V and from 0.587 to 2.060 for CH at 1H:1V. Targeted ANOVA/MANOVA for MH soil confirmed the influence of geometry and combined loading. Therefore, Vetiver should be considered a complementary, site-specific, and risk-informed mitigation measure rather than a universal stabilization solution.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/su18147054first seen 2026-07-13 06:02:28
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