Integrated Analysis of Flow Field and Local Scour Around River-Crossing Submerged Pipelines Under Ice Cover
摘要
This study investigates the complex interaction between flowing water and river-crossing submerged pipelines under ice cover, focusing on the impact of ice-induced scour on structural integrity. The research employs Acoustic Doppler Velocimetry (ADV) measurements to analyze flow patterns, utilizing synthetic ice cover (styrofoam panels) for simulation. The study underscores the significance of understanding dynamic interactions, emphasizing the influence of ice cover on velocity profile shifts. Observations offer insights into spatial and temporal variations in the hydrodynamic conditions surrounding submerged pipelines. Additionally, the research explores the effects of sediment transport and bed morphology on local scour initiation and development under ice cover. Key findings indicate that the vertical velocity component is crucial in scour hole formation. Scour depth is maximized downstream of the pipeline. The integrated analysis bridges the gap between flow dynamics and scour processes in ice-covered channels, contributing to a comprehensive understanding of challenges faced by river-crossing submerged pipelines. These insights have practical implications for design and maintenance strategies in cold regions, enhancing the reliability of river-crossing infrastructure. The study’s findings are crucial for mitigating the risks associated with channel bed scour, ultimately ensuring the structural integrity of submerged pipelines in dynamic water environments.