水利水电科技进展2018，Vol.38Issue(1)：36-43,8.DOI:10.3880/j.issn.1006-7647.2018.01.005
管袋坝袋间接缝侧壁损漏冲刷模型试验
Experimental study on scouring along seams between tubes of a punctured geotube dam
摘要
Abstract
For the problem of sand erosion from the side walls of punctured geotubes, a set of experimental apparatus was developed to study the erosion stability along seams between tubes of a punctured geotube dam. Based on the experiments in both unidirectional flow and wave flow conditions, characteristics of erosion process and sand transport in the seams between geotubes were summarized. The impact of breakage on the scouring stability in unidirectional flow conditions was also analyzed. The results show that scouring stability in the seams between geotubes in unidirectional flow conditions is related to the threshold velocity of the sand particles with the maximum diameter, velocity magnitudes inside the seam and the extent of the breakage. Scouring instability can easily occur in the case of larger breakage, higher flow velocity and lower threshold velocity of sand particles. In wave flow conditions, the critical peak water pressure is selected as a criterion parameter to determine the stability of seams between punctured geotubes. The scouring stability in wave flow conditions for real engineering works can be determined by comparing the peak water pressure in the seams with the critical value.关键词
管袋坝/袋间接缝/侧壁损漏/冲刷稳定/试验研究Key words
geotube dam/seam between geotubes/punctured wall/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,李少鹏,郝雪航,蔚成亮,毛文龙..管袋坝袋间接缝侧壁损漏冲刷模型试验[J].水利水电科技进展,2018,38(1):36-43,8.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）
