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A platform for research: civil engineering, architecture and urbanism
Are Dams in Malaysia Exposed to Earthquake Threat?
Earthquakes could cause disasters such as surface faulting, ground shaking, landslides, liquefaction, and surface rupture. In earthquake areas, there are important structures including dams. Earthquakes produce multiple hazards, which can impact a storage dam through ground shaking creating vibrations in dams, fault movements in the dam foundation causing structural distortions, fault displacement in the reservoir bottom generating seiches in the reservoir and consequent dam overtopping, and mass movements into the reservoir triggering impulse waves. Recently, several cracks detected in the Ataturk Dam in Turkey due to an earthquake of magnitude 7.8 on February 6, 2023, gave a lesson to be learnt about structural design. Therefore, there is a need to identify the dams in Malaysia that have the potential to be exposed to earthquake threats. Assessment of the dams with regard to local active faults and potential seismic hazards is carried out where the detailed location of all dams in the geocentric coordinate system is identified. The geospatial data of the dam is overlain with Seismotectonic and Seismic Hazard maps utilising ArcGIS software. Based on the GIS analyses and interpretation, it is shown that 59 dams are located within 150 km of local active fault lines which are susceptible to experiencing damage to their structure. Whilst in terms of intensity and Peak Ground Acceleration (PGA), 55 dams would have potential exposure to very light-to-light damage. Dam design against earthquake events should be reviewed, and the installation of more accelerometers and seismometers are steps to minimise the earthquake risk to the community and environment.
Are Dams in Malaysia Exposed to Earthquake Threat?
Earthquakes could cause disasters such as surface faulting, ground shaking, landslides, liquefaction, and surface rupture. In earthquake areas, there are important structures including dams. Earthquakes produce multiple hazards, which can impact a storage dam through ground shaking creating vibrations in dams, fault movements in the dam foundation causing structural distortions, fault displacement in the reservoir bottom generating seiches in the reservoir and consequent dam overtopping, and mass movements into the reservoir triggering impulse waves. Recently, several cracks detected in the Ataturk Dam in Turkey due to an earthquake of magnitude 7.8 on February 6, 2023, gave a lesson to be learnt about structural design. Therefore, there is a need to identify the dams in Malaysia that have the potential to be exposed to earthquake threats. Assessment of the dams with regard to local active faults and potential seismic hazards is carried out where the detailed location of all dams in the geocentric coordinate system is identified. The geospatial data of the dam is overlain with Seismotectonic and Seismic Hazard maps utilising ArcGIS software. Based on the GIS analyses and interpretation, it is shown that 59 dams are located within 150 km of local active fault lines which are susceptible to experiencing damage to their structure. Whilst in terms of intensity and Peak Ground Acceleration (PGA), 55 dams would have potential exposure to very light-to-light damage. Dam design against earthquake events should be reviewed, and the installation of more accelerometers and seismometers are steps to minimise the earthquake risk to the community and environment.
Are Dams in Malaysia Exposed to Earthquake Threat?
Water Res.Develop.Managem.
Mohd Sidek, Lariyah (editor) / Salih, Gasim Hayder Ahmed (editor) / Ahmed, Ali Najah (editor) / Escuder-Bueno, Ignacio (editor) / Basri, Hidayah (editor) / Ahmad, Ferdaus (author) / Golutin, Bailon (author) / Rahimi, Nik Mohd Nishamuddin Nik (author)
International Conference on Dam Safety Management and Engineering ; 2023 ; Kuala Lumpur, Malaysia
Proceedings of the 2nd International Conference on Dam Safety Management and Engineering ; Chapter: 15 ; 213-222
2024-02-05
10 pages
Article/Chapter (Book)
Electronic Resource
English
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