引用格式：顾畛逵，姚鑫，李凌婧，等，2023.河流功率梯度在泥石流空间易发程度调查中的应用：以金沙江流域为例[J].地质力学学报，29（1）：87−98.DOI：10.12090/j.issn.1006-6616.2022022Citation:GUZK，YAOX，LILJ，etal.，2023.Applyingstreampowergradientintheinvestigationonspatialsusceptibilityofdebrisflow:AcaseoftheJinshaRiverBasin,China[J].JournalofGeomechanics，29（1）：87−98.DOI：10.12090/j.issn.1006-6616.2022022河流功率梯度在泥石流空间易发程度调查中的应用：以金沙江流域为例顾畛逵1,2,3，姚鑫1,2,3，李凌婧1,2,3，陶涛1,2,3,4GUZhenkui1,2,3，YAOXin1,2,3，LILingjing1,2,3，TAOTao1,2,3,41.中国地质科学院地质力学研究所，北京100081；2.自然资源部活动构造与地质安全重点实验室，北京100081；3.中国地质调查局新构造与地壳稳定性研究中心，北京100083；4.中国地质大学（武汉），工程学院，湖北武汉4300741.InstituteofGeomechanics,ChineseAcademyofGeologicalSciences,Beijing100081,China;2.KeyLaboratoryofActiveTectonicsandGeologicalSafety,MinistryofNaturalResources,Beijing100081,China;3.ResearchCenterofNeotectonismandCrustalStability,ChinaGeologicalSurvey,Beijing100083,China;4.FacultyofEngineering,ChinaUniversityofGeosciences(Wuhan),Wuhan430074,Hubei,ChinaApplyingstreampowergradientintheinvestigationonspatialsusceptibilityofdebrisflow:AcaseoftheJinshaRiverBasin,ChinaAbstract:Investigationofspatialsusceptibilityofdebrisflowisabasisforcarryingoutgeologicalhazardpreventionanddevelopingecologicalrestorationplans.Itisdifficulttoefficientlyandaccuratelyidentifypotentialdebrisflowgulliesonalargespatialscalesimplybyrelyingonfieldsurveyscombinedwithremotesensingobservationsordebrisflowsimulationswithsmallwatershedsasunits.TakingtheJinshaRiverBasinofChinaasanexample,weproposeaquantitativeschemetodescribetheintensityofextrinsicforcesbycalculatingthestreampowergradient(ω).Weextractedgulliespronetodebrisflow,assumingthatthereisnospatialheterogeneityintheprovenancesupplyconditionsbasedonthefundamentalunderstandingthatdebrisflowisahigh-energygravityflow.Inthesituationwherethethreshold(ω=1×10−4W/m2)isthemutationals...
