数值模拟法与传统水力学法在导流围堰设计中的联合应用  

Combined Application of Numerical Simulation and Traditional Hydraulics in River Diversion Cofferdam Design

作　　者：廖一天 李悠然[1] 邓源[1] 李萌 Liao Yitian;Li Youran;Deng Yuan;Li Meng(College of Hydraulic ＆ Environmental Engineering, China Three Gorges Univ. , Yichang 443002, Chin)

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2018年第4期22-27,共6页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金青年基金资助项目(51209123)

摘　　要：水利水电工程施工大多选择围堰隔离河道水流来创造干地作业的条件,导流围堰的修筑关系到主体工程的施工是否能顺利展开.通过对雅口水利枢纽坝址区气象、水文和地质条件的分析研究,采用水动力学数值模拟法建立了流量与围堰的水动力数值模型,在流量为13 500m3/s、3 980m3/s、1 940m3/s 3种不同流量下,对一期导流围堰分别进行水力计算;获得了3种不同流量下,围堰处的上下游水位、进出口流速以及各断面的最大流速;并采用经验水力学法对计算结果进行了复核,从而得出了导流围堰设计的各项参数,并设计了导流围堰的断面形式.通过数值模拟法计算,使得导流计算过程更简便,结果更准确,设计更合理.The water conservancy and hydropower projects construction mostly choose river diversion cofferdam to create the conditions for dry land operations.The construction of river diversion cofferdam is related to whether the construction of the main project can be carried out smoothly.Through analyzing meteorological,hydrological and geological conditions in the dam site of the Yakou hydro-project,the hydrodynamic numerical model of flow and cofferdam is established by numerical simulation of hydrodynamics;and then hydraulic calculations are carried out for the first stage river diversion cofferdam at three flow rates of 13 500 m^3/s,3 980 m^3/s and 1 940 m^3/s respectively,so as to obtain three different flows,the cofferdam upstream and downstream water level,import and export flow rate and the maximum flow rate of each section.The results of hydraulic calculation are verified by empirical hydraulic method.The parameters of river diversion cofferdam design are obtained and the cross-sectional form of river diversion cofferdam is designed.The numerical simulation method makes the calculation of river diversion flow more simple,the result more accurate and the design more reasonable.

关 键 词：导流计算 围堰设计 数值模拟 水力学 

分 类 号：TV551.3[水利工程—水利水电工程]