考虑混凝土坝溃决过程的溃口流量过程线分析  

Analysis of Breach Discharge Process Line Considering Failure Process of Concrete Dam

作　　者：胡文兵[1] 郭红民[1] 蔡黎明[1] 张田甜[1] 胡海松[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《水电能源科学》2017年第3期57-59,共3页Water Resources and Power

基　　金：水利部公益性行业科研专项项目(201401027)

摘　　要：为获得较合理的溃口流量过程线,从混凝土坝溃决的基本特点出发,假定其溃决过程为以坝基中心线为轴,坝体整体向后倾倒。对该溃决方式进行水动力分析,得到混凝土坝倾倒过程的溃口流量计算公式,并以此计算公式结合概化典型流量过程线法得到了新的溃口流量计算方法。以某工程为例,得出该计算方法与经典的混凝土坝瞬溃计算方法所得溃口流量过程线整体一致,但开始阶段更符合实际情况。新的溃口流量计算方法可为类似工程的大坝溃口流量分析提供参考。In order to obtain more reasonable breach discharge process line,starting from the basic characteristics of concrete dam breaking,the paper assumes that the concrete dam dump by the axial which is the center line of the dam foundation to the downstream.By making hydrodynamic force analysis of the concrete dam breaking process,the calculation method of breach discharge at the beginning of concrete dam breaking is calculated.Combined with the generalized typical flow process line method,a new method is proposed to calculate the breach discharge process.Taking aproject for an example,the new calculation is approximately the same with the generalized typical flow process line,but the beginning is more accord with the actual situation.The new calculation method can be the reference for similar projects analysis of breach discharge.

关 键 词：溃口 流量过程线 混凝土坝 水动力分析 计算方法 

分 类 号：TV122.4[水利工程—水文学及水资源]