...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Natural hazards and earth system sciences >Brief communication: Remotely piloted aircraft systems for rapid emergency response: road exposure to rockfall in Villanova di Accumoli (central Italy)
【24h】

Brief communication: Remotely piloted aircraft systems for rapid emergency response: road exposure to rockfall in Villanova di Accumoli (central Italy)

机译：简要沟通：用于快速应急响应的远程飞行器系统：Villanova Di Acculoli（意大利中部）的岩石接触

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The use of remotely piloted aircraft systems (RPASs) in geosciences is often aimed at the acquisition of an image sequence to produce digital models and orthophotographs of the topographic surface. The technology can be applied for rockfall hazard and risk assessment. To study rockfalls, an approach consists in the application of numerical models for the computation of rockfall trajectories. Data required for such simulations include digital terrain models, location of the instability source areas, and the mechanical properties of the terrain. In this article, we present an analysis of the earthquake-triggered rockfall that occurred along the SP18 in Villanova di Accumoli (Lazio, central Italy) during the seismic sequence that started on 24 August 2016. A survey with a multicopter was carried out to obtain a surface model of the terrain and identify and characterize the source areas and other instable blocks in areas not accessible in the field. The investigated area extends for 6500 m(2 )and was covered by 161 photographs that were used to obtain an orthophoto with a ground resolution of 2.5 cm and a digital surface model with a ground resolution of 20 cm x 20 cm, which was processed and fused with GNSS real-time kinematic data. To obtain a map of potential rockfall trajectories, we run the numerical model STONE, using as origin of the boulders both source areas mapped in the field and pixels with a slope angle above a selected threshold. Results showed that only the part of the road SP18 already affected by the rockfall was exposed to further rockfall impacts. In particular, it was observed that 29.2 % (i.e. 12 123) of the 41 500 simulated trajectories may potentially reach or cross this tract of the road. Based on these data, limited protection measures were suggested. The combined use of RPAS data, fused with ground GPS points, an accurate geomorphological survey, and terrain static and dynamic parameters from the literature allows fast, low-cost, and replicable
机译：在地质上使用远程导向的飞行器系统（倾斜）通常旨在获取图像序列以产生地形表面的数字模型和正交投影。该技术可用于岩石危险和风险评估。为了学习岩石，一种方法包括在计算岩石轨迹计算的应用中的应用。这种模拟所需的数据包括数字地形模型，不稳定源区域的位置，以及地形的机械性能。在本文中，我们在2016年8月24日开始的地震序列期间对Villanova di Accumoli（Lazio，中部Lazio）的SP18发生的地震触发岩石的分析。进行了一个多功能的调查以获得地形的一个表面模型，并在该领域无法访问的区域中识别和表征源区域和其他稳定块。所研究的区域延伸6500米（2），并被161张照片覆盖，用于获得2.5cm的地分辨率和数字表面模型的正射科，地分辨率为20cm×20厘米，这是处理的与GNSS实时运动数据融合。为了获得潜在的岩石轨迹的地图，我们运行数值模型石头，用作巨石的起源，包括在场的源区和像素上以上所选阈值上方的斜角的像素。结果表明，只有受岩石影响的SP18的一部分仅接触到进一步的岩石影响。特别地，观察到4100 500个模拟轨迹的29.2％（即123）可能会达到这条路的这种道路。基于这些数据，提出了有限的保护措施。 RPA数据的结合使用，与地GPS点融合，精确的地貌调查，以及来自文献的地形静态和动态参数允许快速，低成本和可复制

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号