A Deterministic Approach Of Generating Earthquake Liquefaction Severity Map Of Mindoro, Philippines

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Abstract

An essential component in decision making for site planners is the availability of risk maps to various geological hazards. Liquefaction in particular can be devastating and impose disastrous damage to existing structures built in earthquake prone areas like the province of Mindoro. Through the aid of in situ data, a simplified method of evaluating earthquake induced liquefaction potential was carried out in this study. This is to address the difficulty and high cost necessary to carry out the development of a liquefaction risk map. Borehole data were collected from different locations in Mindoro and the earthquake liquefaction severity index in each location were calculated using deterministic approach. Results showed that different levels of liquefaction severity were obtained in various areas of Mindoro. There were locations exhibiting manifestations of surface liquefaction due to 7.1 Mw earthquake with a peak ground acceleration of 0.4g. The generated liquefaction severity maps can be utilized as baseline information in selecting appropriate geotechnical intervention for soil improvement and stabilization. Further, the indices can be used as additional dimension of evaluating the holistic reliability of existing engineering structures.

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Concha, N., Guinto, J., Grimaldo, A., Espinoza, M., Juan, D., & Mapacpac, M. (2020). A Deterministic Approach Of Generating Earthquake Liquefaction Severity Map Of Mindoro, Philippines. International Journal of GEOMATE, 18(70), 94–98. https://doi.org/10.21660/2020.70.9308

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