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<p>Indonesia’s ambitious highway construction projects aim to enhance connectivity and societal well-being but often encounter significant challenges. Steep slopes, volcanic terrain, dense forests, and adverse environmental conditions, including heavy rainfall and seismic activity, pose considerable risks to construction stability and safety. These challenges are exemplified in a highway pier construction project in Sumedang, West Java, where disposal slope potential failures caused project delays. To address these issues, this study investigates factors contributing to slope instability and evaluates the effectiveness of advanced monitoring and mitigation strategies. Unmanned Aerial Vehicles (UAVs), specifically the DJI Phantom 4, were employed for slope monitoring during five construction phases. Photogrammetry techniques processed through Agisoft PhotoScan generated digital elevation models (DEMs) to derive slope geometries, which were subsequently used for numerical analysis. Key factors affecting slope stability, including rainfall, vehicle loads, and seismicity, were analyzed using Geostudio software (SEEP/W, QUAKE/W, and SLOPE/W) to estimate the safety factor. The findings highlight the innovative approach of using UAV-based monitoring and numerical analysis to identify critical instability zones and implement timely interventions. The most critical slip surface was observed during the third monitoring period, attributed to high rainfall intensity during the pile construction phase. Temporary reinforcement measures, such as sheet piling, tarpaulin coverage, and water pumps, effectively reduced slope failure risks. This integrated approach mitigated delays and ensured safer construction processes, demonstrating the innovative method of advanced monitoring and numerical analysis in addressing disposal slope instability in challenging terrains.</p>

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Incorporating UAV-Based Monitoring and Stability Estimation for Disposal Slopes during Highway Pier Construction

  • 期刊论文

  • 发表日期：

    2025年2月24日

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  • Juwita,
  • Zhongyu Liu,
  • Tongtong Huang,
  • Chaofan Liu

摘要

Indonesia’s ambitious highway construction projects aim to enhance connectivity and societal well-being but often encounter significant challenges. Steep slopes, volcanic terrain, dense forests, and adverse environmental conditions, including heavy rainfall and seismic activity, pose considerable risks to construction stability and safety. These challenges are exemplified in a highway pier construction project in Sumedang, West Java, where disposal slope potential failures caused project delays. To address these issues, this study investigates factors contributing to slope instability and evaluates the effectiveness of advanced monitoring and mitigation strategies. Unmanned Aerial Vehicles (UAVs), specifically the DJI Phantom 4, were employed for slope monitoring during five construction phases. Photogrammetry techniques processed through Agisoft PhotoScan generated digital elevation models (DEMs) to derive slope geometries, which were subsequently used for numerical analysis. Key factors affecting slope stability, including rainfall, vehicle loads, and seismicity, were analyzed using Geostudio software (SEEP/W, QUAKE/W, and SLOPE/W) to estimate the safety factor. The findings highlight the innovative approach of using UAV-based monitoring and numerical analysis to identify critical instability zones and implement timely interventions. The most critical slip surface was observed during the third monitoring period, attributed to high rainfall intensity during the pile construction phase. Temporary reinforcement measures, such as sheet piling, tarpaulin coverage, and water pumps, effectively reduced slope failure risks. This integrated approach mitigated delays and ensured safer construction processes, demonstrating the innovative method of advanced monitoring and numerical analysis in addressing disposal slope instability in challenging terrains.