Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydrodynamic Modelling of 2018 Kerala Floods in Nilambur Municipality
Among various natural disasters, floods affect the largest number of people globally and has significant socioeconomic and environmental impacts. Fluvial or river floods are largely caused by very high precipitation, resulting in rivers overflowing its banks. Dam break can also cause fluvial floods. The floods of 2018 in Kerala were a tragic natural disaster and caused extensive inundation, loss of life, and widespread damage to property and infrastructure; the problem was compounded by landslides at few locations in the affected areas. Hydrodynamic modelling of flood events helps to understand the causative factors, generate flood inundation maps, assess flood risks, identify flood-prone/affected zones and propose appropriate and effective measures and strategies for flood management in order to minimize damages during flood events. This work is mainly performed to assess the flood extent and impact of the 2018 floods in the geographical area of the Nilambur Municipality in Malappuram District, Kerala. In this study, hydrological modelling of the catchment area of the Chaliyar River upstream of the geographical extent of the Nilambur Municipality was performed using the Hydrologic Modelling System (HEC-HMS) software. Thereafter, 2D hydrodynamic modelling of the river reach was done in the River Analysis System (HEC-RAS) software. SRTM DEM data were used to prepare the flood inundation map of the area under the Nilambur Municipality. Flood depth and flow velocity values obtained from the HEC-RAS model were used to generate the flood hazard map of the Nilambur Municipality. The flood inundation extent was observed to cover an area of 9.5 sq.km. It is observed that about 15% of the area under the Nilambur Municipality falls in the H6 category, i.e., unsafe for both people and automobiles, and buildings in this zone are vulnerable to failure whereas about 46% of the area is considered safe.
Hydrodynamic Modelling of 2018 Kerala Floods in Nilambur Municipality
Among various natural disasters, floods affect the largest number of people globally and has significant socioeconomic and environmental impacts. Fluvial or river floods are largely caused by very high precipitation, resulting in rivers overflowing its banks. Dam break can also cause fluvial floods. The floods of 2018 in Kerala were a tragic natural disaster and caused extensive inundation, loss of life, and widespread damage to property and infrastructure; the problem was compounded by landslides at few locations in the affected areas. Hydrodynamic modelling of flood events helps to understand the causative factors, generate flood inundation maps, assess flood risks, identify flood-prone/affected zones and propose appropriate and effective measures and strategies for flood management in order to minimize damages during flood events. This work is mainly performed to assess the flood extent and impact of the 2018 floods in the geographical area of the Nilambur Municipality in Malappuram District, Kerala. In this study, hydrological modelling of the catchment area of the Chaliyar River upstream of the geographical extent of the Nilambur Municipality was performed using the Hydrologic Modelling System (HEC-HMS) software. Thereafter, 2D hydrodynamic modelling of the river reach was done in the River Analysis System (HEC-RAS) software. SRTM DEM data were used to prepare the flood inundation map of the area under the Nilambur Municipality. Flood depth and flow velocity values obtained from the HEC-RAS model were used to generate the flood hazard map of the Nilambur Municipality. The flood inundation extent was observed to cover an area of 9.5 sq.km. It is observed that about 15% of the area under the Nilambur Municipality falls in the H6 category, i.e., unsafe for both people and automobiles, and buildings in this zone are vulnerable to failure whereas about 46% of the area is considered safe.
Hydrodynamic Modelling of 2018 Kerala Floods in Nilambur Municipality
Lecture Notes in Civil Engineering
Pandey, Manish (Herausgeber:in) / Umamahesh, N. V. (Herausgeber:in) / Ahmad, Z. (Herausgeber:in) / Valyrakis, Manousos (Herausgeber:in) / Jishnu, M. (Autor:in) / Thampi, Santosh G. (Autor:in) / Kumar, Manoj (Autor:in)
International Conference on Hydraulics, Water Resources and Coastal Engineering ; 2023 ; Warangal, India
21.01.2025
19 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
| Taylor & Francis Verlag | 2022
Hydrodynamic loads on buildings in floods
| Taylor & Francis Verlag | 2021
Hydrodynamic Loadings of Buildings in Floods
| British Library Conference Proceedings | 2009