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Accueil du site → Doctorat → Algérie → 2022 → Simulation des ruissellements dans les bassins non jaugés avec la prise en considération des surfaces imperméables

Université 8 mai 1945 de Guelma (2022)

Simulation des ruissellements dans les bassins non jaugés avec la prise en considération des surfaces imperméables

Kadri, Ismahen

Titre : Simulation des ruissellements dans les bassins non jaugés avec la prise en considération des surfaces imperméables

Auteur : Kadri, Ismahen

Université de soutenance : Université 8 mai 1945 de Guelma

Grade : Doctorat 2022

Résumé partiel
The existed hydrological models that were used to describe the hydrological processes varied between the pure mathematics analysis and equations to relations that describe the process empirically based on the physics of the watershed. An oscillation exists between the model’s performance and robustness but it was approved that such a hydrological model is chosen according to the study objective and perspectives. The models that are based on purely physical or conceptual, face the problem of calibrating the large number of parameters that contain. Furthermore, the major watershed measurement is scarce, especially in developing countries. To further understand and excavate this concept, we engaged in this study and went deeper into the hydrological models. We choose different models from both conceptual and Data-driven to analyze. The study area was selected inorder to verify the applicability of the NARX-NN model in small drainage areas, containing theconditions of the Semi-urbanism and the low intensity of rainfall, and then it will be compared to the conceptual HEC-HMS model. We investigate the NARX-NN model to simulate the basin response to real storm events of a small urban watershed. The NARX-NN steps are described in detail, from data representation and insertion, and then calibration and testing.To reach the target hydrograph by the conceptual HEC-HMS, we must pass through several stages. Conceptually, thehole R-R process is a combination of several sub-processes ; we need to treat each one separately. We proposed a new method to carry out the best parameters of calibration using the weightedaverage function ofHEC-HMS models and that gave the best performance. The steps involvedin each model to reaching the hydrograph are dramatically different ; the significance is to presentan analytical comparison step by step of each model.

Mots clés : hydrological Models, Conceptual Models, Data-Driven Models, Watershed, NARX-NN, HEC-HMS, Rainfall-Runoff, Hydrograph

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Page publiée le 30 décembre 2022