同济大学学报（自然科学版）2025，Vol.53Issue(12)：1858-1866,9.DOI:10.11908/j.issn.0253-374x.24276
气压环境对水平旋转滚筒内岩土颗粒材料流动特性的影响
Impact of Atmospheric Pressure Environment on Flow Characteristics of Geotechnical Granular Materials in a Horizontally Rotating Drum
摘要
Abstract
A self-designed low-pressure horizontal rotating drum experimental setup,combined with digital image processing technology,was used to capture various characteristic parameters of particle flow under different atmospheric pressure conditions,in order to study the impact of atmospheric pressure on the flow characteristics of particle materials.The results show that under low-pressure conditions,both the upper and lower repose angles of the particle avalanche flow decrease to varying degrees,reducing the stability of the particle accumulation in the drum and enhancing its flowability.For the entire horizontal drum particle flow collapse system,the lack of additional disturbances caused by air molecules(airflow)under low-pressure conditions diminishes external disturbances,leading to a more ordered and stable state of motion.The collapse angle and collapse duration,however,are not highly sensitive to changes in atmospheric pressure.关键词
岩土颗粒流动/高速远程滑坡/滚筒模型实验/气压环境/颗粒流动特性Key words
geotechnical particle flow/high-speed long-distance landslides/drum model experiment/air pressure environment/particle flow characteristics分类
建筑与水利引用本文复制引用
胡宇翔,郑虎,黄雨,毛无卫..气压环境对水平旋转滚筒内岩土颗粒材料流动特性的影响[J].同济大学学报（自然科学版）,2025,53(12):1858-1866,9.基金项目
国家自然科学基金(42277156) （42277156）
