Large Wood Transport Influence on Flash Flood Risk in a Mountain Village in Central Spain

Ruíz-Villanueva, Virginia; Herrero, Andrés Dı́ez; Pozo, José María Bodoque del; Castellet, Ernest Bladé i; Juny, Martí Sánchez

doi:10.1007/978-3-319-09054-2_23

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…During a flood event, the occurrence of pressurized flows at certain locations is quite common due to the reduction of the effective section by hydraulic structures such as bridges, underground river reaches or channeling rivers in urban areas (Sopelana et al, 2018(Sopelana et al, , 2017, but also induced by the accumulation of vegetation and large wood on it (Ruiz-Villanueva et al, 2013;Ruiz Villanueva et al, 2015). The numerical modeling of the flood at these locations using two-dimensional Sallow Water-based models (2D-SWE) is no longer valid unless the equations are modified to take into account the vertical confinement of the flow (Cea and López Núñez, 2021).…”

Section: Introductionmentioning

confidence: 99%

Modelling pressurized flow through hydraulic structures and bridges using a 2D-SWE-based model

Sanz-Ramos¹,

López-Núñez²,

Cea³

et al. 2022

Proceedings of the 39th IAHR World Congress

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Two-dimensional (2D) hydraulic models solve the Shallow Water Equations (SWE) for the simulation of free surface flows. The necessity of considering in the calculations specific hydraulic structures, such as bridges, gates, weirs, culverts, etc., for representing more realistic flood scenarios, imply the integration in the 2D-SWE of empirical equations that represent the flow through these structures. These empirical equations are usually implemented as internal conditions over a 1D line, modifying the equations with which the flow is calculated in the edges of the mesh elements located at both sides of the line. This approach can be good enough for representing the hydraulic behavior in general. However, this 1D condition over a line, which only affects the element edges, is not a good approximation for simulating the hydrodynamics of pressurized flows, as it is the case of very wide bridges and lids over channelized rivers. New modelling strategies for simulating pressurized flows using the 2D-SWE, the Two-Component Pressure Approach method (TPA) and the Preissmann Slot Method (PSM), have been implemented in Iber. Both approaches were tested in a coverage of a channeled river characterized by several abrupt curvature changes and a contraction/expansion of their wide, and in a bridge located in a river reach that obstructs most of the floodplain. The TPA and PSM methods presented good numerical approaches for simulating pressurized flow for 2D-SWE-based models, fine-tuning the hydraulic behavior, and representing the most critical regions when a pressurized flow is generated in hydraulic structures.

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Section: Introductionmentioning

confidence: 99%

Modelling pressurized flow through hydraulic structures and bridges using a 2D-SWE-based model

Sanz-Ramos¹,

López-Núñez²,

Cea³

et al. 2022

Proceedings of the 39th IAHR World Congress

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“…Other publications investigate specific topics, such as the analysis of flooding scenarios in general [21], flood forecasting using coupled hydrological and hydraulic Models [22], extreme flood inundation in coastal river reaches [23], sensitivity of flood loss estimates for building representation and flow depth attribution methods in micro−scale flood modeling [24], real-time prediction of flood inundation [25], numerical distributed modeling of sedimentary and erosion processes [26], soil erosion predictions [27], bedload transport for mixed flows [28], sediment transport during the breakage of dams [29], drying and transport processes in distributed hydrological modeling [30], wood transport and sediment in rivers, flash floods, etc. [31][32][33][34][35][36], hydrodynamic movement in water bodies due to wind drag action [37], inundation modeling in coastal urban areas [38], local rainfall dynamics and uncertain boundary conditions [39,40], conservation of the cultural heritage due to flood risk [41], historical reconstruction [25], hazard mapping [42], research on the rivers confluence in order to analyze the geomorphic consequences of the backwater effect [43], assessment of the physical habitat suitability for fish [44], and many other works with a wide variety of themes.…”

Section: Introductionmentioning

confidence: 99%

Comparative Hydrodynamic Analysis by Using Two−Dimensional Models and Application to a New Bridge

Mateo-Lázaro

Castillo-Mateo

García‐Gil

et al. 2020

Water

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This document develops a methodology that evaluates the impact on the environment of the rivers produced by the creation of civil infrastructures. The methodology is based on the two-dimensional hydrodynamic calculation by using shallow water equations both in the conditions prior to the creation of the infrastructure, and in the new conditions after the infrastructure is created. Subsequently, several characteristics, such as water depth and velocity, among others, are compared between the initial and final conditions, and a two-dimensional zoning of the changes observed is obtained. The methodology herein presented is useful to verify the impact that the implantation of different infrastructures around the river currents could produce. In addition, it is also relevant for carrying out a study taking into account different infrastructure options related to river currents, as well as for selecting the most suitable one. By using the methodology presented, changes on the regime of the currents caused by the infrastructures can be deduced, including a qualitative and quantitative zoning of the changes, with a special emphasis on some characteristics, such as depth and velocity. The methodology is applied in a case study for the creation of a road bridge over the Jalon River in Spain.

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Large Wood Transport Influence on Flash Flood Risk in a Mountain Village in Central Spain

Cited by 2 publications

References 10 publications

Modelling pressurized flow through hydraulic structures and bridges using a 2D-SWE-based model

Modelling pressurized flow through hydraulic structures and bridges using a 2D-SWE-based model

Comparative Hydrodynamic Analysis by Using Two−Dimensional Models and Application to a New Bridge

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