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<p>Rockfalls in abandoned quarry environments pose significant risks to infrastructure, public safety, and economic activities. This study investigates such hazards in the abandoned limestone quarry of Vecchiano, Pisa, Italy, where complex geological structures and anthropogenic modifications increase susceptibility to slope instabilities. High-resolution Digital Terrain Models (DTMs), generated using terrestrial and aerial LiDAR data, facilitated detailed slope characterization and rockfall trajectory simulations with Rockyfor3D software. The analysis identified two critical zones with kinetic energies reaching up to 50,000&#xa0;kJ, posing substantial risks to roads and residential areas. Mitigation strategies focused on the strategic placement of virtual barriers informed by simulation data, enabling targeted interventions to address the highest-risk zones. These barriers provided critical insights into block dynamics, such as velocities, passing heights, and energies, guiding risk management decisions. This case study highlights the effectiveness of combining high-resolution geospatial data, numerical modeling, and simulation-driven approaches to address rockfall hazards. The findings provide a replicable framework for assessing and mitigating geohazards in quarry and mountainous environments, emphasizing the role of advanced technologies in improving safety and sustainability.</p>

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Integrated LiDAR and engineering techniques for rockfall hazard mitigation in abandoned quarry environments

  • 期刊论文

  • 发表日期：

    2025年7月28日

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  • Marouane Benmakhlouf

摘要

Rockfalls in abandoned quarry environments pose significant risks to infrastructure, public safety, and economic activities. This study investigates such hazards in the abandoned limestone quarry of Vecchiano, Pisa, Italy, where complex geological structures and anthropogenic modifications increase susceptibility to slope instabilities. High-resolution Digital Terrain Models (DTMs), generated using terrestrial and aerial LiDAR data, facilitated detailed slope characterization and rockfall trajectory simulations with Rockyfor3D software. The analysis identified two critical zones with kinetic energies reaching up to 50,000 kJ, posing substantial risks to roads and residential areas. Mitigation strategies focused on the strategic placement of virtual barriers informed by simulation data, enabling targeted interventions to address the highest-risk zones. These barriers provided critical insights into block dynamics, such as velocities, passing heights, and energies, guiding risk management decisions. This case study highlights the effectiveness of combining high-resolution geospatial data, numerical modeling, and simulation-driven approaches to address rockfall hazards. The findings provide a replicable framework for assessing and mitigating geohazards in quarry and mountainous environments, emphasizing the role of advanced technologies in improving safety and sustainability.