第10期2023年10月文章编号:1673-9000(2023)10-0007-04陕西水利ShaanxiWaterResourcesNo.10October,2023坎式阶梯溢流堰的冲刷特性研究赵海,高海静,裘丽恩,钟绍柱,毛欣?(1.杭州市富阳区林业水利局,浙江杭州311400;2.浙江水利水电学院,浙江杭州310018)【摘要]坎式阶梯溢流堰,即在传统阶梯溢流堰的台阶上增加尾坎结构,达到减小流速、减少冲刷的目的。为研究阶梯水平面上的尾坎位置与冲刷特性之间的关系,运用Flow-3D软件对坎式阶梯溢流堰的冲刷特性进行数值模拟,得到尾坎与台阶水平面末端出口之间的距离为0.5m和10m条件下,坎式阶梯溢流堰的水流流态、最大冲坑深度和位置、冲坑长度等。结果表明尾坎布置越靠近阶梯溢流堰的台阶末端,消能效果越好,冲刷深度更小。【关键词]坎式阶梯;溢流堰;冲刷特性;数值模拟【中图分类号]TV132+.2【文献标识码]BStudyonScourCharacteristicsofSill-TypeSteppedOverflowWeirZhaoHai,GaoHaijing,QiuLien,ZhongShaozhu',MaoXin?(1.ForestryandWaterResourcesBureauofFuyangDistrict,Hangzhou311400,Zhejiang;2.ZhejiangUniversityofWaterResourcesandElectricPower,Hangzhou310018,Zhejiang)Abstract:Thesill-typesteppedoverflowweiristoaddthetailsillstructureonthestepsofthetraditionalsteppedoverflowweir,soastoreducetheflowvelocityandreducetheerosion.Inordertostudytherelationshipbetweenthepositionofthetailsillonthehorizontalplaneofthestaircaseandtheerosioncharacteristics,Flow-3Dsoftwarewasusedtonumericallysimulatetheerosioncharacteristicsofthecascadeoverflowweir,andtheflowpattern,maximumcraterdepthandlocation,andcraterlengthofthecascadeoverflowweirwereobtainedundertheconditionthatthedistancedbetweenthetailsillandtheendoutletofthehorizontalplaneofthestaircasewas0.5mand10m.Theresultsshowthatthecloserthetailsillistotheendofthestepofthesteppedoverflowweir,thebettertheenergydissipationeffectisandthelesstheerosiondepthis.Keywords:Sill-typestep;overflowweir;scourcharacteristics;numericalsimulation蚀破坏的直接原因。对不同泄槽角度、消能池底高度、尾1引言水深度和流速条件下的冲刷过程进行了研究。确定了冲刷深每个时期的水利建设都是特定自然和社会背景的产物"。近年来,伴随快速发展的水利行业,阶梯式溢流堰在各种水利工程中...