水资源与水工程学报2012，Vol.23Issue(6)：124-127,131,5.
地下空间出入楼梯洪水动力特性试验研究
Experiment on hydrodynamic characteristics of passageway in underground space
申若竹 1杨敏 1刘鹏2
作者信息
- 1. 天津大学水利工程仿真与安全国家重点实验室,天津300072
- 2. 中国水电工程顾问集团西北勘测设计研究院,陕西西安710065
- 折叠
摘要
Abstract
In recent years , extreme heavy precipitation events have happened and caused enormous losses to underground space at home and abroad. At present, reports about the problem of flood intrusion mech-anism and hydrodynamic characteristics in underground space are few and unsystematic. This paper deals with a hydraulic model test of inundation in the passageway of underground space. Through numerous ex-periments under the various conditions, intrusive flow behaviors in the stairs of underground space are studied in details; The maximum velocity of the staircase is 3. 9m/s when the flow discharge reaches to 0.28 m3 /(s · m). The dray force build-up curves have similar trends, which are all propinquity to liner-growth . The slope of force - discharge relation curve standing by double legs is bigger than the one stand-ing by one leg. The maximum drag force of one leg is 3. 93 ×9. 8N while the one of double legs is 8. 96 ×9.8N under the most unfavorable condition. The results provide theoretical significance to guide the normal design and evacuation in underground space and provide reference for the flood invasion mecha-nism research in the future.关键词
地下空间/洪水入侵/洪水动力特性/模型试验Key words
underground space/ flood intrusion/ flood hydrodynamic characteristics/ model test分类
建筑与水利引用本文复制引用
申若竹,杨敏,刘鹏..地下空间出入楼梯洪水动力特性试验研究[J].水资源与水工程学报,2012,23(6):124-127,131,5.
