摘要
随着无人机技术的日益发展,无人机遥感逐渐广泛地应用于地质灾害的风险分析中,但基于该技术的滑坡灾害定量风险分析方法仍在探索中。利用无人机遥感采集的激光点云数据,建立了边坡的三维几何模型,使用一阶可靠度方法估算边坡的破坏概率;通过FLAC3D数值模拟软件计算边坡的安全系数,并对FLAC3D进行二次开发来确定边坡的失效后果,由此对单体滑坡灾害进行定量风险分析。分析方法简捷明了,为评估滑坡灾害的风险提供了新的思路。
With the increasing development of unmanned aerial vehicle technology,unmanned aerial vehicle remote sensing(UAVRS)has been widely used in the risk analysis of geological hazards.However,the quantitative risk analysis method of landslide hazards based on that technique has still being developed up to now.A three-dimensional geometric model of slopes based on the laser point cloud data collected by UAVRS was built,the failure probability of the slope was appraised by the first-order reliability method,the safety factors of the slope were calculated by the numerical simulation software of FLAC3D,the failure consequences of the slope were determined based on the secondary development of FLAC3D,and the quantitative risk analysis on a single landslide hazard was conducted.The proposed analysis method was simple and straightforward,which provided a new idea for assessment risks of landslide hazards.
作者
杜伟
王佳颖
李玉容
杨国柱
DU Wei;WANG Jiaying;LI Yurong;YANG Guozhu(State Grid Electric Power Space Company Limited,Beijing 102209,China)
出处
《工业建筑》
北大核心
2023年第2期177-182,共6页
Industrial Construction
基金
国网电力空间技术有限公司自建科技项目(1100/2021-44006B)
关键词
无人机遥感
滑坡
风险
FLAC3D
一阶可靠度
unmanned aerial vehicle remote sensing
landslide
risk
FLAC3D
first-order reliability method
作者简介
第一作者:杜伟,男,1982年出生,硕士,高级工程师;通信作者:李玉容,liyurong20@126.com。
