摘要
准确预测坝前涌浪爬坡高度及破碎与否,对工程风险防控至关重要。为此,通过假定涌浪波爬坡过程服从非线性浅水方程,建立非线性震荡波、非线性过渡波及类孤立波在斜坡上爬坡时爬高预测理论模型。验证表明:提出的方法精度高,能够模拟非线性过渡波和震荡波在斜坡上的爬坡过程,预测最大误差不超过10%,多数误差小于5%。引入的Iribarren number与相对波峰高度关系可以区分非线性震荡波、非线性过渡波及类孤立波的破碎类型,但无法区分耗散涌波的破碎情况。该研究可为库区滑坡涌浪灾害预警提供技术手段。
Accurate prediction of the climbing height and breaking of waves in front of the dam is crucial for engineering risk prevention and control.Therefore,this study assumes that the wave run-up process follows a nonlinear shallow water equation,and establishes a theoretical model for predicting the run-up height of nonlinear oscillatory waves,nonlinear transition waves,and quasi-solitary waves on slopes.The demonstration and verification found that the method proposed in this study has high accuracy and can simulate the run-up process of nonlinear transition waves and oscillatory waves on slopes.The maximum prediction error does not exceed 10%,and most errors are less than 5%.The correlation between Iribarren number and relative peak height introduced in this study can distinguish the breaking types of nonlinear oscillatory waves,nonlinear transition waves,and quasi solitary waves,but cannot distinguish the breaking of dissipated surge wave.This study can provide technical means for early warning of waves generated by landslide in the reservoir area.
作者
李鹏峰
荆海晓
丁新潮
贺翠玲
诸亮
刘少斌
LI Pengfeng;JING Haixiao;DING Xinchao;HE Cuiling;ZHU Liang;LIU Shaobin(PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China;State Key Laboratory of Eco-Hydraulics in Northwest Arid Regionof China,Xi'an University of Technology,Xi'an 710048,China;"Four Main Bodies and One Combination"Engineering Technology Research Center for Ecological Protection and Restoration of Rivers and Lakes in Shaanxi Province,Xi'an 710065,China;Shaanxi Water Ecological Environment Engineering Technology Research Center,Xi'an 710065,China;High Slope and Geological Hazard Research and Treatment Sub-center of National Energy and Hydropower Engineering Technology Research and Development Center,Xi'an 710065,China)
出处
《西北水电》
2024年第5期77-86,共10页
Northwest Hydropower
基金
国家自然科学基金项目(51909211)
陕西省自然科学基础研究计划项目(2019JQ-744)
西安市科技计划项目(23GXFW0050).
关键词
滑坡涌浪
涌浪类型
爬坡
波浪破碎
Landslide-induced waves
Wave types
Run-up
Wave breaking
