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基于无人机的滑坡地形快速重建与稳定性分析

张欢 巨能攀 陆渊 万勋 蹇志权

张欢, 巨能攀, 陆渊, 万勋, 蹇志权. 基于无人机的滑坡地形快速重建与稳定性分析[J]. 水文地质工程地质. doi: 10.16030/j.cnki.issn.1000-3665.202008010
引用本文: 张欢, 巨能攀, 陆渊, 万勋, 蹇志权. 基于无人机的滑坡地形快速重建与稳定性分析[J]. 水文地质工程地质. doi: 10.16030/j.cnki.issn.1000-3665.202008010
ZHANG Huan, JU Nengpan, LU Yuan, WAN Xun, JIAN Zhiquan. Rapid remodeling of three-dimensional terrain and stability analyses of landslide based on UAV[J]. Hydrogeology & Engineering Geology. doi: 10.16030/j.cnki.issn.1000-3665.202008010
Citation: ZHANG Huan, JU Nengpan, LU Yuan, WAN Xun, JIAN Zhiquan. Rapid remodeling of three-dimensional terrain and stability analyses of landslide based on UAV[J]. Hydrogeology & Engineering Geology. doi: 10.16030/j.cnki.issn.1000-3665.202008010

基于无人机的滑坡地形快速重建与稳定性分析

doi: 10.16030/j.cnki.issn.1000-3665.202008010
详细信息
    作者简介:

    张欢(1994-),男,硕士研究生,主要从事边坡稳定性方面的研究。E-mail:1269739527@qq.com

    通讯作者:

    巨能攀(1973-),男,教授,博士生导师,主要从事高边坡工程及地质灾害监测预警的教学与研究工作。E-mail:jnp@cdut.edu.cn

  • 中图分类号: P642.2

Rapid remodeling of three-dimensional terrain and stability analyses of landslide based on UAV

  • 摘要: 对滑坡进行快速准确的定量化调查评价可以为滑坡应急处置提供科学依据。无人机航摄系统以其机动灵活、响应迅速等特点,日益成为地质灾害调查的可靠手段。以册亨平庆组滑坡为例,将无人机摄影测量技术应用于滑坡的调查中,总结出一套基于轻型无人机航摄技术的边坡快速调查与定量评价方法:首先通过多种软件建立高精度三维地质模型,使用有限差分软件进行数值模拟;然后对滑坡变形机制进行分析,并对滑坡稳定性进行评价。研究结果表明:(1)通过Global mapper、Pix4Dmapper、Rhinoceros等软件对无人机采集数据进行处理并建立三维计算模型,具有简便、快捷、可靠的特点;(2)以无人机航摄为核心的滑坡调查评价,能将传统地质的定性分析和数值模拟的定量分析有效结合,为后续应急处置提供有力的依据及数据支撑;(3)册亨平庆组滑坡是在降雨条件下由坡体自重应力作用产生的蠕滑-拉裂式滑坡,调查时滑坡已启动,地面裂缝有加速扩展的趋势。
  • 图  1  无人机遥感系统

    Figure  1.  Unmanned aerial vehicle remote sensing

    图  2  基于无人机航摄的滑坡应急处置流程图

    Figure  2.  Flow chart of landslide emergency disposal based on UAV aerial photography

    图  3  剖面位置及研究区域航迹图

    Figure  3.  Track and profile location map of study area

    图  4  册亨平庆组滑坡工程地质剖面图

    Figure  4.  Engineering geological section of the Pingqing landslide in Ceheng

    图  5  数字正射影像

    Figure  5.  Digital orthophoto map

    图  6  三维模型图(基于Smart3D)

    Figure  6.  3D model map (based on Smart3D)

    图  7  灾害体解译结果

    Figure  7.  Results of disaster interpretation

    图  8  数字表面模型和数字高程模型

    Figure  8.  Digital surface model and digital elevation model

    图  9  FLAC3D计算模型及剖面选取

    Figure  9.  FLAC3D calculation model and section selection

    图  10  天然工况下位移分布特征

    Figure  10.  Displacement distribution characteristics under the natural conditions

    图  11  暴雨工况下位移分布特征

    Figure  11.  Characteristics of displacement distribution under the rainstorm condition

    图  12  暴雨工况下塑性区分布特征

    Figure  12.  Distribution characteristics of plastic zone under rainstorm condition

    表  1  无人机和相机主要参数

    Table  1.   Main parameters of UAV and camera

    项目参数项目参数项目参数
    起飞重量907 g巡航速度17 m/s飞行高度500 m
    飞行时长31 min最大爬升速度5 m/s抗风能力5级
    相机类型Hasselblad
    L1D-20c
    传感器尺寸1英寸CMOS有效像素2 000万
    快门速度8-1/8 000 s最大照片尺寸5472×3648颜色表示sRGB
    下载: 导出CSV

    表  2  物理力学参数

    Table  2.   Values of physical and mechanical parameters

    岩类体积模量/
    GPa
    剪切模量/
    GPa
    密度/
    (kg·m3
    黏聚力/
    MPa
    内摩擦角
    正切值
    抗拉强度/
    MPa
    黏土质粉砂岩30.512.82 4504.0312.12
    粉质黏土18.54.11 8901.3160.05
    下载: 导出CSV
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  • 收稿日期:  2020-08-02
  • 修回日期:  2021-01-27

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