高拱坝大泄量碰撞消能水垫塘底板冲击压强试验研究  

Impact Pressure Distribution Characteristics in Plunge Pool of High Arch Dam with Large Discharge

作　　者：徐建荣 彭育 赵建钧[2] 辜晋德[2] 王宇[2] XU Jian-rong;PENG Yu;ZHAO Jian-jun;GU Jin-de;WANG Yu(Huadong Engineering Corporation Limited,Hangzhou 311122,China;State Key Laboratory of HydrologyWater Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029

出　　处：《水电能源科学》2020年第11期98-100,共3页Water Resources and Power

基　　金：国家重点研发计划(2016YFC0401705);中国博士后科学基金项目(2019M661883);国家自然科学基金项目(51409164)。

摘　　要：鉴于目前水垫塘冲击压强的研究多为定性分析,考虑多因素影响的定量研究尚不多见,基于某在建大泄量高拱坝碰撞消能工况开展了水工物理模型试验,在碰撞流态的基础上研究多因素影响下冲击压强演变规律。结果表明,当前研究范围内,水垫塘最大冲击压强与泄量水深比、表深孔流量比显著相关,建立了基于各参数的最大冲击压强经验表达式,研究结果可供实际工程参考应用。Presently,the study of impact pressure are mainly qualitatively analyzed,and the quantitative impact pressure is not yet elucidated in view of multiple parameters analysis.By the model of high arch dam under construction,this paper experimentally investigated impact pressure characteristics under the influence of multiple parameters on basis of jet collision regimes.The results show that the maximum impact pressure significantly depends on the ratio flow discharge to flow depth and the discharge ratio of surface outlets to deep outlets in the scope of current research,and the formula of estimating maximum impact pressure are put forward.The achievements of this investigation are used to define issuance parameters relevant for engineering practice.

关 键 词：大泄量 冲击压强 水舌碰撞 消能 

分 类 号：TV653.3[水利工程—水利水电工程]