青草沙水库排水闸加大泄量后的消能防冲研究-学兔兔 www.xuetutu.com

青草沙水库排水闸加大泄量后的消能防冲研究-学兔兔 www.xuetutu.com水利水电技术第44卷2013年第12期青草沙水库排水闸加大泄量后的消能防冲研究丁星星，谢东(1．河海大学水利水电学院，江苏南京210098；2．上海友为工程设计有限公司，上海200333)摘要：青草沙排水闸增大泄量到300m／s时下游将发生远驱水跃，现有消力池需要采取相应的加固措施。经水力计算和水槽试验，建议采用海漫段定点抛投四面体的海漫加糙方式，四面体棱长l111，呈梅花状布置，顺水流和垂直水流方向，中心点间距与棱长之比2：l，共布置5排，其壅水效果与稳定性均可满足要求。关键词：青草沙排水闸；消能防冲；海漫加糙中图分类号：TV653(255)文献标识码：A文章编号：1000—0860(20l3)12．0051—04ResearchonenergydissipationanderosioncontrolofQingcaoshaSluiceafterdischargeincreaseDINGXingxing，XIEDong(1．CollegeofWaterConservancyandHydropowerEngineering，HohaiUniversity，Nanjing210098，China；2．ShanghaiYouweiEngineeringDesignCo．，Ltd．，Shanghai200333，China)Abstract：TherepeⅡeddownstreamhydraulicjumpwilloccur，ifthedischargereleasedfromQinsc~haSluiceincreasesto300m3／s，andthenthecorrespondingreinforcementmeasuresmustbeadoptedfortheexistingstillingbasin．Throughthehydrauliccalcula—tionandlaboratoryflumeexperimentconcerned，itissuggestedtoplaceconcretetetrahedmnsatthefixed-pointsforrougheningtheapronsectiontherein．Theedge—lengthoftheconcretetetrahed