Investigating The Seismic Implications Of Oil Exploration Activities In The Albertine Region And Its Impact On Existing Buildings: A Case Study Of Hoima City

Abstract

In an effort to understand the seismic vulnerability of buildings in Hoima City, Uganda, this study investigated the potential influence of oil exploration activities on earthquake occurrence. The research employed a multifaceted approach. Firstly, it examined the spatial and temporal correlation between oil drilling sites and earthquake epicentres. This analysis revealed a cluster of earthquakes near drilling locations, along with a significant rise in earthquake activity coinciding with the surge in oil exploration around 2006, suggesting a possible link between drilling and induced seismicity. Secondly, a Rapid Visual Screening (RVS) was conducted to evaluate the seismic vulnerability of 30 buildings in Hoima City. This assessment identified two buildings (buildings 12 and 13) with concerning vulnerability scores, prompting further evaluation. Building 13 then underwent a detailed seismic analysis using SeismoBuild software. This analysis, called pushover analysis, pinpointed weaknesses in specific columns, indicating they would likely be damaged under an earthquake with a peak ground acceleration (PGA) of 0.156g. The findings of this study establish a potential link between oil exploration and increased earthquake occurrence in Hoima City. Moreover, the RVS and detailed seismic analysis highlight the existing buildings' vulnerability to earthquakes. The identified structural weaknesses necessitate the implementation of retrofitting measures to improve seismic resilience and prevent potential collapse during future earthquakes. Based on these conclusions, the study recommends prioritizing retrofitting strategies for existing buildings in the region. This is crucial for mitigating potential earthquake damage and ensuring public safety in the event of future seismic events exceeding a PGA of 0.156g.