跌水建筑物水力计算及分析  

Hydraulic Calculation and Analysis of Water Drop Structures

作　　者：顾嵋杰 寇思飞 王军忠 GU Meijie;KOU Sifei;WANG Junzhong(Powerchina Northwest Engineering Corporation Limited,Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《西北水电》2021年第1期54-56,59,共4页Northwest Hydropower

摘　　要：通过对跌水建筑物控制堰跌口宽度、跌水消力池水力计算原理及方法进行分析,对消能计算经验公式及水跃方程公式进行比较论证,认为水跃方程根据动量定理推导而出,理论依据充分,成果可靠,而经验公式缺乏理论支撑,与水跃方程公式计算成果相差较大,建议跌水建筑物水力计算宜选用水跃方程公式。最后通过工程实例,计算确定跌水控制堰跌口宽度、消力池池深、池长参数,供读者借鉴。Through the analysis of the width of the weir drop structure,the hydraulic calculation principle and method of the hydraulic drop stilling pool,the empirical formula for energy dissipation calculation and the formula of hydraulic jump equation are compared and demonstrated.The hydraulic jump equation is considered to be derived from the momentum theorem,the theoretical basis is sufficient and the results are reliable.However,the empirical formula lacks theoretical basis,and the calculation results are quite deviated from the results calculated by hydraulic jump equation formula.After comparison and analysis,it is recommended that the hydraulic jump equation formula be adopted for hydraulic calculation of the hydraulic drop structures.In conclusion,through engineering examples,the paper calculates and defines the width of the weir drop,the depth of the stilling pool,and the length of the stilling pool for readers'reference.

关 键 词：跌水 水舌 收缩水深 水跃方程 经验公式 

分 类 号：TV135.2[水利工程—水力学及河流动力学]