IndustrialConstructionVol.53,No.2,2023工业建筑2023年第53卷第2期177基于无人机遥感的滑坡灾害风险分析*杜伟王佳颖李玉容杨国柱(国网电力空间技术有限公司,北京102209)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。关键词:无人机遥感;滑坡;风险;FLAC3D;一阶可靠度DOI:10.13204/j.gyjzG22011009LandslideHazardRiskAnalysisBasedonUnmannedAerialVehicleRemoteSensingDUWeiWANGJiayingLIYurongYANGGuozhu(StateGridElectricPowerSpaceCompanyLimited,Beijing102209,China)Abstract:Withtheincreasingdevelopmentofunmannedaerialvehicletechnology,unmannedaerialvehicleremotesensing(UAVRS)hasbeenwidelyusedintheriskanalysisofgeologicalhazards.However,thequantitativeriskanalysismethodoflandslidehazardsbasedonthattechniquehasstillbeingdevelopeduptonow.Athree-dimensionalgeometricmodelofslopesbasedonthelaserpointclouddatacollectedbyUAVRSwasbuilt,thefailureprobabilityoftheslopewasappraisedbythefirst-orderreliabilitymethod,thesafetyfactorsoftheslopewerecalculatedbythenumericalsimulationsoftwareofFLAC3D,thefailureconsequencesoftheslopeweredeterminedbasedonthesecondarydevelopmentofFLAC3D,andthequantitativeriskanalysisonasinglelandslidehazardwasconducted.Theproposedanalysismethodwassimpleandstraightforward,whichprovidedanewideaforassessmentrisksoflandslidehazards.Keywords:unmannedaerialvehicleremotesensing;landslide;risk;FLAC3D;first-orderreliabilitymethod*国网电力空间技术有限公司自建科技项目(1100/2021-44006B)。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。收稿日期:2022-01-10近年来我国极端天气事件时有发生,受其影响我国多地的滑坡、崩塌和泥石流等地质灾害事件频发,由此造成人员伤亡和基础设施瘫痪等重大的损...