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首页> 外文期刊>Landslides >Application of 3D-DDA integrated with unmanned aerial vehicle-laser scanner (UAV-LS) photogrammetry for stability analysis of a blocky rock mass slope
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Application of 3D-DDA integrated with unmanned aerial vehicle-laser scanner (UAV-LS) photogrammetry for stability analysis of a blocky rock mass slope

机译：3D-DDA集成的应用与无人机 - 激光扫描仪（UAV-LS）摄影测量进行稳定性分析块状斜坡

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In stability analysis of discontinuity-controlled slopes, the rationality of results is related to the accuracy of three-dimensional (3D) slope morphology and the reliability of the discontinuity survey. With the advent of remote sensing technologies for engineering geological surveys and slope stability analyses, step-change increases have been made in the quality of data available and geometrical characterization of rock slopes. Although these techniques are frequently employed in the characterization of slope geometry and joint surfaces at present, limited research has been undertaken to effectively process the derived data and improve the quality in the reconstruction of slope geometry imported into 3D discontinuous numerical models. In this paper, an integrated system coupling 3D-DDA and UAV-LS photogrammetry is presented as a tool to evaluate the stability of a blocky rock mass slope. The system includes a UAV-LS module, a modeling module, a block-generation module, and a 3D-DDA calculation module. In the UAV-LS module, the use of UAV-LS system integrated with field mapping and site observations allows the acquisition of detailed outputs (point clouds) on both the slope and discontinuity geometry. An effective combination of commercial software Geomagic and Hyperworks is used in the modeling module to process oceans of 3D point cloud data and construct complex 3D geometrical models based on reverse engineering. In the block-generation module, the three-dimensional discontinuous deformation analysis (3D-DDA) method is then carried out in order to simulate the movement of potentially unstable blocks, within which an independent block-cutting algorithm is used to generate the blocks with arbitrary shapes and the finite structural planes similar to the real cases. The 3D-DDA calculation module uses 3D-DDA calculation algorithm to derive the simulation results. The capability of the proposed system for stability analysis of a jointed slope is demonstrated by a prac
机译：在不连续控制斜率的稳定性分析中，结果的合理性与三维（3D）斜率形态的准确性和不连续性调查的可靠性有关。随着工程地质调查和边坡稳定性分析的遥感技术的出现，已经采用了岩石斜坡的数据质量和几何表征的逐步变化。尽管目前斜坡几何形状和关节表面的表征经常采用这些技术，但已经进行了有限的研究，以有效地处理导出的数据，并提高了进口到3D不连续数值模型的斜坡几何形状中的质量。在本文中，耦合3D-DDA和UAV-LS摄影测量的集成系统作为评估块状岩石质量斜率的稳定性的工具。该系统包括UAV-LS模块，建模模块，块生成模块和3D-DDA计算模块。在UAV-LS模块中，使用与现场映射和现场观测集成的UAV-LS系统允许在斜率和不连续性几何体上获取详细的输出（点云）。建模模块中使用了商业软件地理和HyperWorks的有效组合，以处理3D点云数据的海洋，并基于逆向工程构建复杂的3D几何模型。在块生成模块中，然后执行三维不连续变形分析（3D-DDA）方法以模拟潜在不稳定块的移动，其中使用独立的块切割算法来生成块任意形状和有限的结构平面类似于实际情况。 3D-DDA计算模块使用3D-DDA计算算法来导出仿真结果。通过PRAC证明了建议的稳定性分析系统的稳定性分析的能力

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