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Impact on the Sustainable Development Goals (SDGs)

Analysis of institutional authors

Pastor, MCorresponding AuthorTayyebi, SmAuthorStickle, MmAuthorYague, AAuthorMolinos, MAuthorNavas, PAuthorManzanal, DAuthor

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May 27, 2021
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A depth integrated, coupled, two-phase model for debris flow propagation

Publicated to: Acta Geotechnica. 16 (8): 2409-2433 - 2021-08-01 16(8), DOI: 10.1007/s11440-020-01114-4

Authors:

Pastor, Manuel; Tayyebi, Saeid M; Stickle, Miguel M; Yague, Angel; Molinos, Miguel; Navas, Pedro; Manzanal, Diego
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Affiliations

‎ Univ Politecn Madrid, ETS Ingenieros Caminos, Dept Appl Math, Calle Prof Aranguren 3, Madrid 28040, Spain - Author

Abstract

Debris flows are a type of fast landslides where a mixture of soil and water propagates along narrow channels. The main characteristics are (1) important relative displacements between the solid and fluid phases, and (2) development of pore-water pressures in excess to hydrostatic. The ratios between vertical and horizontal displacements of the flow, from the triggering point to the deposition, indicate that friction angles are much smaller than those measured in laboratories. Debris flows are modeled as two phases flow, but implementing pore-water pressure is an important issue. The purpose of this paper is to improve the existing two phases debris flow models by implementing pore-water pressures in excess to hydrostatic. It is found that pore pressure evolution depends on consolidation, changes in the flow depth, and changes and gradients of porosity. The proposed depth integrated mathematical model is discretized using two sets of SPH nodes (solid and fluid), with a set of finite difference meshes associated with each solid material SPH point. The paper presents two examples from where it is possible to gain insight into the differences between the models (with and without excess pore water pressure).
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Keywords

AvalancheClean water and sanitationConsolidationDebris flowDepth integrated modelDynamic-behaviorFailureFluidFormulationPoint methodSimulationSmoothed particle hydrodynamicsSphSph modelTwo-phase model

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Acta Geotechnica due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2021, it was in position 7/41, thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering, Geological.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 3.52. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 3.9 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-28, the following number of citations:

  • WoS: 47
  • Scopus: 48
  • Google Scholar: 61
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-28:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 36 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/94545/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 24
  • Downloads: 1
Continuing with the social impact of the work, it is important to emphasize that, due to its content, it can be assigned to the area of interest of ODS 6 - Clean water and sanitation, with a probability of 54% according to the mBERT algorithm developed by Aurora University.
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (PASTOR PEREZ, MANUEL TOMAS) and Last Author (MANZANAL MILANO, DIEGO GUILLERMO).

the author responsible for correspondence tasks has been PASTOR PEREZ, MANUEL TOMAS.

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Project objectives

La aportación persigue los siguientes objetivos: analizar las características principales de los flujos de detritos, incluyendo los desplazamientos relativos entre fases sólida y fluida y la generación de presiones de poro-agua superiores a las hidrostáticas; mejorar los modelos existentes de flujo bifásico de detritos mediante la implementación de presiones de poro-agua en exceso a las hidrostáticas; determinar la evolución de la presión de poro en función de la consolidación, variaciones en la profundidad del flujo y gradientes de porosidad; desarrollar un modelo matemático integrado en profundidad que utilice nodos SPH para las fases sólida y fluida; y evaluar las diferencias entre modelos con y sin presión de poro-agua excedente mediante ejemplos numéricos.
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Most relevant results

El estudio presenta un modelo acoplado bidimensional para la propagación de flujos de detritos, integrando las fases sólida y líquida y considerando presiones de poro en exceso a las hidrostáticas. Los resultados más relevantes son: (1) se identifican desplazamientos relativos significativos entre las fases sólida y fluida; (2) las presiones de poro dependen de la consolidación, variaciones en la profundidad del flujo y gradientes de porosidad; (3) los ángulos de fricción efectivos son notablemente menores que los obtenidos en laboratorio, según las relaciones entre desplazamientos verticales y horizontales; (4) el modelo matemático propuesto se discretiza mediante nodos SPH para ambas fases y mallas de diferencias finitas para el sólido; (5) se comparan dos casos que evidencian diferencias sustanciales entre modelos con y sin presión de poro en exceso.
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Awards linked to the item

The authors gratefully acknowledge the economic support provided by the Spanish Ministry MINECO under project ALAS (BIA2016-76253-P). In addition, the authors gratefully acknowledge the support of the Geotechnical Engineering Office, Civil Engineering and Development Department of the Government of the Hong Kong SAR in the provision of the digital terrain models for the Hong Kong landslide case.
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