地球科学与环境工程河南科技HenanScienceandTechnology总第799期第5期2023年3月基于Massflow模拟的察隅县N047泥石流运动特征研究赵思远1吴琦1柴向阳2(1.华北水利水电大学地球科学与工程学院,河南郑州450003;2.河南省遥感地质勘察有限公司,河南郑州450000)摘要:【目的目的】研究察隅县编号N047泥石流灾害的运动特征,为后续的防灾、减灾工作提供有效的参考。【方法方法】依据野外调查成果,采用Massflow数值仿真软件,对N047泥石流灾害进行模拟。【结果结果】①在20年一遇暴雨状况下,其运动特征为:泥石流从开始到停歇经过了“蠕动-加速-减速-停歇”的过程,导致其运动状态变化的主要因素为沟道内地形、沟形的不断变化;②在50年一遇与100年一遇暴雨状况下,预测的泥石流最大流速与最高泥深分别为:5.678m/s、4.950m及6.476m/s、5.353m。【结论结论】不同降雨频率下,该泥石流的流速、泥深及流体液面范围均与流量呈正相关的关系。关键词:泥石流;察隅县;massflow;数值模拟中图分类号:P642.23文献标志码:A文章编号:1003-5168(2023)05-0106-06DOI:10.19968/j.cnki.hnkj.1003-5168.2023.05.021ResearchonMovementCharacteristicsofN047DebrisFlowinChayuCountyBasedonMassflowSimulationZHAOSiyuan1WUQi1CHAIXiangyang2(1.NorthChinaUniversityofWaterResourcesandElectricPower,CollegeofGeosciencesandEngineering,Zhengzhou450003,China;2.HenanRemoteSensingGeologicalExplorationCo.,Ltd.,Zhengzhou450000,China)Abstract:[Purposes]ThispaperstudythemovementcharacteristicsofN047debrisflowdisasterinChayuCounty,thenprovideeffectivereferenceforsubsequentdisasterpreventionandalleviation.[Meth⁃ods]Basedonfieldinvestigationresults,theN047debrisflowdisasterissimulatedbyMassflownumeri⁃calsimulationsoftware.[Findings]①Undertheconditionofonce-in-20-yearrainstorm,itsmovementcharacteristicsareasfollows:debrisflowgoesthroughtheprocessofperistalsis-acceleration-deceleration-pause,andthemainfactorsleadingtothechangeofitsmovementstatearethecontinuouschangeoftopographyandditchshapeintheditch;②Underonce-in-50-yearandonce-in-100-yearrainstormconditions,thepredictedmaximumflowrateandmaximummuddepthofdebrisfloware5.678m/s,4.950mand6.476m/s,5.353mrespectively.[Conclusions]Itisc...