水电站滑坡诱发冲击波水动力特性的数值研究

Numerical study on hydrodynamic characteristics of shock waves induced by landslides in hydropower stations

为进一步深入了解水电站滑坡诱发冲击波水动力特性,文章通过FLOW3D模拟软件研究冲击波的水动力特性,利用模型实验进一步研究横向及纵向冲击波的变化。试验结果表明,随着场地距离增加,冲击波高度逐渐减少,最小冲击波高度仅为1.1cm。监测时间为4s时,冲击波高度数值基本为负值。在场地位置y=-10、0、10cm的位置内,冲击波高度均为正值,而y=20、30cm位置内,冲击波高度在4s后的冲击波高度均为负值,最小冲击波高度为-0.4cm。

To further understand the hydrodynamic characteristics of shock waves induced by landslides in hydropower stations,this paper uses FLOW3D simulation software to study the hydrodynamic characteristics of shock waves,and uses model experiments to further study the changes in lateral and longitudinal shock waves.The experimental results show that as the distance from the site increases,the height of the shock wave gradually decreases,and the minimum height of the shock wave is only 1.1cm.When the monitoring time is 4 seconds,the height value of the shock wave is basically negative.At locations y=-10cm,y=0cm,and y=10cm,the shock wave height is positive,while at locations y=20cm and y=30cm,the shock wave height after 4 seconds is negative,with a minimum shock wave height of-0.4cm.