Publication: Karst characteristics and groundwater inrush of karstic limestone formation
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Date
2024-07-01
Authors
Nur Hidayah, Ahmad Nizar
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Abstract
The study investigates the geological and hydrogeological characteristics of karstic limestone formations in Kuala Lumpur, emphasizing the mechanisms and risks associated with groundwater inrush. The primary objectives include analyzing the geological structure of the area through detailed mapping and sampling, determining the relationship between karst features and groundwater depression, and developing a comprehensive 3D model to simulate groundwater inrush scenarios. The research reveals that karstic cavities and fractures significantly influence groundwater flow and inrush events, posing substantial challenges for engineering projects such as tunneling and mining. Using tools like RockWorks and Visual MODFLOW, the study develops accurate 3D geological and groundwater flow models, which predict groundwater patterns and recharge rates effectively. Findings indicate that areas with significant weathered limestone are particularly susceptible to groundwater inrush during excavation. Real-time monitoring and predictive modeling techniques are highlighted as crucial for early warnings and risk mitigation. The study's results underscore the importance of integrating detailed geological assessments into infrastructure planning in karstic regions. Future research recommendations include advancing monitoring technologies and incorporating temporal variations in groundwater dynamics to enhance predictive accuracy and risk management strategies. This comprehensive analysis provides valuable insights for improving safety and operational efficiency in projects affected by karstic hydrogeology.