【作者】 陈思翰； 田忠；

【Author】 CHEN Si-han;TIAN Zhong;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University;

【机构】 四川大学水力学与山区河流开发保护国家重点实验室；

【摘要】 大坝溃决会造成巨大的生命财产损失,溃口流量过程是进行溃坝分析的重要参数。本文通过理论分析,建立了土石坝逐渐溃决过程中,溃口瞬时流量的计算方法;采用本研究提出的方法对某实际工程溃口流量进行了计算,并与HEC-RAS软件计算的成果进行了对比,两者吻合良好,且本文提出的计算方法更为简便快捷;对某实际工程溃坝洪水演进进行了计算分析,讨论了主、副坝同时溃决与单独溃决情况下,溃口流量及洪水演进过程的差异。更多还原

【Abstract】 Dam outburst is dangerous and can cause huge loss of property,and the flow process of broken mouth is an important parameter for dam break analysis.In this paper,through theoretical analysis,the calculation method of instantaneous flow of the broken mouth in the process of gradual outburst of Earth-Rock Dam is established.The method proposed in this paper is used to calculate the flow rate of a real project,and compared with the results calculated by the HEC-RAS,the two are in good agreement,and the former is more brief.This paper calculates and analyzes the evolution of a dam break in a practical project,and discusses the difference of the flow rate and the evolution process of the flood under the condition of simultaneous outburst and individual outburst of the main and secondary dams.更多还原