摘要
滑坡涌浪是影响山区水库安全运行的主要威胁之一,研究V型河道滑坡涌浪的首浪特征和影响因素对库区灾害防治有重要意义.本文使用FLOW3D计算流体力学方法对V型河道滑坡涌浪灾害进行了系统研究.建立了V型河道滑坡涌浪计算模型,考虑滑坡体体积、滑速、河道水深、岸坡倾角、滑床摩擦系数等因素,进行了35组不同工况下的滑坡涌浪数值模拟,获取滑坡入水产生涌浪的过程和首浪高度.将数值模拟结果与经验公式进行了对比,分析不同因素对首浪高度的影响程度.结果表明,河道水深、滑床摩擦系数与首浪高度呈负相关,滑坡体积、入水速度、岸坡倾角与首浪高度呈正相关.各因素对首浪高度的影响程度关系为:入水速度>滑坡体积>岸坡倾角>河道水深>滑床摩擦系数.本文研究为山区水库滑坡涌浪灾害防治提供参考.
Landslide-generated impulse waves(LGIWs)pose significant risks to the safe operation of mountain reservoirs.Understanding the characteristics and influencing factors of the impulse waves generated by landslides in V-shaped river channels is crucial for disaster prevention and mitigation.This study uses the computational fluid dynamics software FLOW3D to investigate the LGIWs that occur in V-shaped river channels.Considering various factors such as landslide volume,velocity,water depth,slope angle,and friction coefficient,a total of 35 numerical models are built using the control variable method.The dynamic processes of impulse wave generation and the height of the leading wave are analyzed.The simulation results are validated by the comparison with empirical formulas.Then the influence of each factor on the leading wave height is systematically analyzed.The results indicate that water depth and friction coefficient are negatively correlated with the wave height,while landslide volume,velocity and slope angle exhibit the positive correlation with the wave height.The impact ranking of these factors on the height of the leading wave follows the order:velocity>landslide volume>slope angle>water depth>friction coefficient.This study provides a useful reference for the hazard assessment and management of LGIWs in mountain reservoirs.
作者
王环玲
冯业林
粟焕
赵富刚
马行生
WANG Huanling;FENG Yelin;SU Huan;ZHAO Fugang;MA Hangsheng(Geotechnical Research Institute,Hohai University,Nanjing 210098,China;PowerChina,Kunming Engineering Corporation Limited,Kunming 650214,China;Huaneng Lancang River Hydropower Inc.,Guiyang 550081,China)
出处
《三峡大学学报(自然科学版)》
北大核心
2025年第3期1-6,19,共7页
Journal of China Three Gorges University:Natural Sciences
基金
国家自然科学基金重点项目(51939004)
中国华能集团有限公司科技项目(HNKJ22-H107)。
关键词
滑坡涌浪
首浪高度
敏感性分析
V型河道
FLOW3D
landslide-generated impulse waves
height of the leading wave
sensitivity analysis
V-shaped river channel
FLOW3D
