水利水电科技进展2018，Vol.38Issue(1)：28-35,8.DOI:10.3880/j.issn.1006-7647.2018.01.004
管袋坝袋间接缝坝芯吹填砂流失模型试验
Experimental study on dam core sand scouring through seams between tubes of a geotube dam
摘要
Abstract
To study the problem of sand erosion through seams between geotubes, erosion stability of the backfill sand inside the dam core was carried out by a self-developed experimental apparatus. The physical model test was performed in unidirectional flow conditions and wave conditions. The transport characteristics of sand particles and scouring stability were analyzed. Experimental results show that in the condition of unidirectional flow, the process and mechanism of sand particle erosion has a "groove type" characteristic. In the condition of wave flow, arch-like structures will appear, form and collapse and correspondingly the erosion process can be divided into three stages of lashing, arching and stability. The critical length of the sand pile inside the seams between tubes was chosen as a criterion parameter to determine the erosion stability of seams between geotubes. The scouring stability in wave flow conditions can be determined by comparing the length of the seam between geotubes and the length of the sand pile inside the seam in real engineering works.关键词
管袋坝/袋间接缝/坝芯/吹填砂/冲刷稳定/模型试验Key words
geotube dam/seam between geotubes/dam core/backfill sand/scouring stability/experimental research分类
建筑与水利引用本文复制引用
满晓磊,束一鸣,曹明杰,蔚成亮,郝雪航,李少鹏,毛文龙..管袋坝袋间接缝坝芯吹填砂流失模型试验[J].水利水电科技进展,2018,38(1):28-35,8.基金项目
国家自然科学基金(51179065) （51179065）
国家"十二五"科技支撑计划(2012BAB03B02) （2012BAB03B02）
江苏省高校优势学科建设工程项目(PAPD) （PAPD）
