摘要
为分析三维滑坡冲击涌浪的远场传播特征,采用FLOW-3D软件建立三维模型,选取不同的滑坡体厚度、宽度与入水速度,模拟滑坡体入水、水体飞溅以及涌浪产生和传播过程。结果表明:滑坡涌浪在传播7倍水深距离后趋于稳定,其相对波高与周期由滑坡体弗劳德数、相对下滑时间以及滑坡体相对体积决定,滑坡体对远场涌浪能量的传递率在8.0%~19.7%之间。
To investigate the far-field propagation characteristics of three-dimensional impulse waves generated by subaerial landslide, a three-dimensional landslide-generated wave model was established using FLOW-3D. The process of the landslide mass impact with water splash followed by landslide-induced wave generation and propagation were investigated under the condition of slides with different thickness, width and variable entry speeds. The results show that the landslide wave propagation keeps stable beyond a distance of 7 times of water-depth from the slide entry point. The dimensionless wave height and wave period are determined by the Froude number of landslide mass, the dimensionless motion time and the landslide body size. The energy conservation rate from the landslide to the far-field wave fluctuates from 8.0% to 19.7%.
作者
黄瑞启
黄筱云
张少强
程永舟
HUANG Ruiqi;HUANG Xiaoyun;ZHANG Shaoqiang;CHENG Yongzhou(School of Hydraulic and Environmental Engineering,Changsha University of Science and Technology,Changsha 410114,China;Key Laboratory of Water and Sediment Science and Water Disaster Prevention of Hunan Province,Changsha 410114,China)
出处
《水利水电科技进展》
CSCD
北大核心
2023年第1期36-42,共7页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金面上项目(52171245)
湖南省教育厅科学研究重点项目(20A011)
湖南省自然科学基金青年项目(2021JJ40607)。
关键词
水上滑坡
冲击涌浪
远场传播
FLOW-3D
三维模型
subaerial landslide
impulse wave
far-field propagation
FLOW-3D
three-dimensional model
